diff --git a/.gitignore b/.gitignore
index 44dbcd64d..53e77bcaf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.pyc
 .idea/
+.ansible/
diff --git a/roles/telemetry_chargeback/.gitignore b/roles/telemetry_chargeback/.gitignore
new file mode 100644
index 000000000..424bd2624
--- /dev/null
+++ b/roles/telemetry_chargeback/.gitignore
@@ -0,0 +1 @@
+.ansible/
diff --git a/roles/telemetry_chargeback/README.md b/roles/telemetry_chargeback/README.md
index 352b58d2f..ae93799bb 100644
--- a/roles/telemetry_chargeback/README.md
+++ b/roles/telemetry_chargeback/README.md
@@ -1,11 +1,11 @@
 telemetry_chargeback
-=========
+
 The **`telemetry_chargeback`** role is designed to test the **RHOSO Cloudkitty** feature. These tests are specific to the Cloudkitty feature. Tests that are not specific to this feature (e.g., standard OpenStack deployment validation, basic networking) should be added to a common role.
 
 The role performs two main functions:
 
 1. **CloudKitty Validation** - Enables and configures the CloudKitty hashmap rating module, then validates its state.
-2. **Synthetic Data Generation** - Generates synthetic Loki log data for testing chargeback scenarios using a Python script and Jinja2 template.
+2. **Synthetic Data Generation & Analysis** - Generates synthetic Loki log data for testing chargeback scenarios and calculates metric totals. The role automatically discovers and processes all scenario files matching `test_*.yml` in the `files/` directory. For each scenario it runs: generate synthetic data, compute syn-totals, ingest to Loki, flush Loki ingester memory, and get cost via CloudKitty rating summary (using begin/end from syn-totals). Retrieve-from-Loki is included in the load_loki_data flow. After all scenarios, the role runs cleanup (`cleanup_ck.yml`) to remove the local flush cert directory.
 
 Requirements
 ------------
@@ -15,7 +15,7 @@ It relies on the following being available on the target or control host:
 * The **OpenStack CLI client** must be installed and configured with administrative credentials.
 * Required Python libraries for the `openstack` CLI (e.g., `python3-openstackclient`).
 * Connectivity to the OpenStack API endpoint.
-* **Python 3** with the following libraries for synthetic data generation:
+* **Python 3** with the following libraries for synthetic data generation and analysis:
   * `PyYAML`
   * `Jinja2`
 
@@ -23,6 +23,7 @@ It is expected to be run **after** a successful deployment and configuration of
 
 * **OpenStack:** A functional OpenStack cloud (RHOSO) environment.
 * **Cloudkitty:** The Cloudkitty service must be installed, configured, and running.
+* **Loki / OpenShift (for ingest and flush):** When using ingest and flush tasks, the control host must have `oc` CLI access, and the Cloudkitty Loki stack (route, certificates, ingester) must be deployed. The role sets Loki push/query URLs and extracts certificates via `setup_loki_env.yml`.
 
 Role Variables
 --------------
@@ -30,33 +31,98 @@ The role uses the following variables to control the testing environment and exe
 
 ### User-Configurable Variables (defaults/main.yml)
 
+These variables can be overridden when importing the role or set at the play level. Users can customize these based on their deployment environment and test requirements.
+
 | Variable | Default Value | Description |
 |----------|---------------|-------------|
 | `openstack_cmd` | `openstack` | The command used to execute OpenStack CLI calls. This can be customized if the binary is not in the standard PATH. |
+| `cloudkitty_debug` | `false` | Enable debug mode for the role. |
+| `logs_dir_zuul` | `{{ ansible_env.HOME }}/ci-framework-data/logs` | Directory for log files. |
+| `artifacts_dir_zuul` | `{{ ansible_env.HOME }}/ci-framework-data/artifacts` | Directory for generated artifacts. |
+| `cert_dir` | `{{ ansible_user_dir }}/ck-certs` | Local directory for extracted ingest/query certs. |
+| `local_cert_dir` | `{{ ansible_env.HOME }}/ci-framework-data/flush_certs` | Local directory for flush certs (removed by cleanup_ck.yml after the run). |
+| `remote_cert_dir` | `osp-certs` | Directory inside the OpenStack pod for certs. |
+| `cert_secret_name` | `cert-cloudkitty-client-internal` | OpenShift secret name for client certificates. |
+| `client_secret` | `secret/cloudkitty-lokistack-gateway-client-http` | Secret for flush client certs. |
+| `ca_configmap` | `cm/cloudkitty-lokistack-ca-bundle` | ConfigMap for CA bundle. |
+| `logql_query` | `{service="cloudkitty"}` (overridable via `loki_query`) | LogQL query for Loki. |
+| `cloudkitty_namespace` | `openstack` | OpenShift namespace for Cloudkitty/Loki resources. |
+| `openstackpod` | `openstackclient` | OpenStack client pod name for exec/cp. |
+| `lookback` | `6` | Days lookback for Loki query time range. |
+| `limit` | `50` | Limit for Loki query results. |
+
+**Example: Overriding variables when importing the role**
+```yaml
+- name: "Run chargeback tests"
+  ansible.builtin.import_role:
+    name: telemetry_chargeback
+  vars:
+    cloudkitty_namespace: "my-custom-namespace"
+    lookback: 10
+    cloudkitty_debug: true
+```
 
-### Internal Variables (vars/main.yml)
+### Synthetic Data Scripts
 
-These variables are used internally by the role and typically do not need to be modified.
+These variables are used internally by the role and should not be modified. They use `role_path` for internal file/script references and define internal file naming conventions.
 
 | Variable | Default Value | Description |
 |----------|---------------|-------------|
-| `logs_dir_zuul` | `/home/zuul/ci-framework-data/logs` | Remote directory for log files. |
-| `artifacts_dir_zuul` | `/home/zuul/ci-framework-data/artifacts` | Directory for generated artifacts. |
+| `cloudkitty_scenario_dir` | `{{ role_path }}/files` | Directory containing scenario files (`test_*.yml`). |
 | `cloudkitty_synth_script` | `{{ role_path }}/files/gen_synth_loki_data.py` | Path to the synthetic data generation script. |
 | `cloudkitty_data_template` | `{{ role_path }}/templates/loki_data_templ.j2` | Path to the Jinja2 template for Loki data format. |
-| `ck_data_config` | `{{ role_path }}/files/test_static.yml` | Path to the scenario configuration file. |
-| `ck_output_file_local` | `{{ artifacts_dir_zuul }}/loki_synth_data.json` | Local path for generated synthetic data. |
-| `ck_output_file_remote` | `{{ logs_dir_zuul }}/gen_loki_synth_data.log` | Remote destination for synthetic data. |
+| `cloudkitty_summary_script` | `{{ role_path }}/files/gen_db_summary.py` | Path to the summary script (gen_db_summary.py). |
+| `cloudkitty_synth_data_suffix` | `-synth_data.json` | Suffix for generated synthetic data files. |
+| `cloudkitty_loki_data_suffix` | `-loki_data.json` | Suffix for Loki query result JSON files. |
+| `cloudkitty_synth_totals_metrics_suffix` | `-synth_metrics_summary.yml` | Suffix for generated metric totals files (from synthetic data). |
+| `cloudkitty_loki_totals_metrics_suffix` | `-loki_metrics_summary.yml` | Suffix for metric totals computed from Loki-retrieved JSON (retrieve_loki_data task). |
+| `cloudkitty_loki_totals_suffix` | `-rating.yml` | Suffix for CloudKitty rating summary output files (from loki_rate task). |
+
+**Note:** Loki push/query URLs are set dynamically in `setup_loki_env.yml` from the Cloudkitty Loki route.
+
+### Synthetic Data Scripts
+
+**gen_synth_loki_data.py** — Generates Loki-format JSON from a scenario YAML and template. The role invokes it with `-r` so that timestamps in the output are in **reverse** order (youngest first, oldest last). When run manually you can omit `-r` for chronological order (oldest first, youngest last).
+
+| Option | Description |
+|--------|--------------|
+| `--tmpl` | Path to the Jinja2 template (e.g. `loki_data_templ.j2`). |
+| `-t`, `--test` | Path to the scenario YAML (e.g. `test_dyn_basic.yml`). |
+| `-o`, `--output` | Path to the output JSON file. |
+| `-p`, `--project-id` | Optional; overrides `groupby.project_id` in every log entry. |
+| `-u`, `--user-id` | Optional; overrides `groupby.user_id` in every log entry. |
+| `-r`, `--reverse` | Reverse timestamp order in JSON output (youngest first, oldest last). |
+| `--debug` | Enable debug logging. |
+
+**gen_db_summary.py** — Parses Loki-style JSON (streams or `data.result`), sorts entries by timestamp, and writes a YAML summary. This script is invoked by the role for **both** synthetic totals (in `gen_synth_loki_data.yml`) and Loki-retrieved totals (in `retrieve_loki_data.yml`). It applies rate calculations with support for `factor`, `offset`, and `mutate` transformations.
+
+| Option | Description |
+|--------|--------------|
+| `-j`, `--json` | Path to the input JSON file (required). |
+| `-o`, `--output` | Path to the output YAML file (default: `<input_stem>_total.yml`). |
+| `--debug` | Directory to write debug output (`<stem>_diff.txt` with one `[ts,log]` JSON per line). |
+
+Output YAML structure:
+
+* **time** — `begin_step` / `end_step`, each with `nanosec` (nanosecond timestamp), `begin`, `end` (ISO window strings from the log payload). The `nanosec` values are used for Loki query time range in `retrieve_loki_data.yml`.
+* **data_log** — `total_timesteps`, `metrics_per_step`, `log_count`.
+* **rate** — `by_types` (per-type `Rate` calculated as `Σ((qty_mutated * factor + offset) * price)`) and `total.Rating` (sum of all rates).
 
 Scenario Configuration
 ----------------------
-The synthetic data generation is controlled by a YAML configuration file (`files/test_static.yml`). This file defines:
+The synthetic data generation is controlled by YAML configuration files in the `files/` directory. Any file matching `test_*.yml` will be automatically discovered and processed. Files whose names start with an underscore (e.g. `_test_*.yml`) are **not** discovered by the role; they can be used as reference or for manual runs.
+
+Each scenario file defines:
+
+* **generation** — Time range configuration (days, step_seconds).
+* **log_types** — List of log type definitions. Each entry has **type** (identifier and value in output), unit, description, qty, price, groupby, and metadata. The **groupby** dict typically includes dimension keys (e.g. id, user_id, project_id, tenant_id); the generator merges **date_fields** into groupby at run time.
+* **required_fields** — Top-level keys required for each log type (e.g. type, unit, qty, price, groupby, metadata).
+* **date_fields** — Date field names to merge into groupby (week_of_the_year, day_of_the_year, month, year).
+* **loki_stream** — Loki stream configuration (service name).
+
+**groupby.id** should be consistent by metric type across scenario files so that the same type always uses the same id.
 
-* **generation** - Time range configuration (days, step_seconds)
-* **log_types** - List of log type definitions with name, type, unit, qty, price, groupby, and metadata
-* **required_fields** - Fields required for validation
-* **date_fields** - Date fields to add to groupby (week_of_the_year, day_of_the_year, month, year)
-* **loki_stream** - Loki stream configuration (service name)
+Scenario files matching `test_*.yml` in the `files/` directory are automatically discovered and processed. Files whose names start with an underscore are not auto-discovered.
 
 Dependencies
 ------------
diff --git a/roles/telemetry_chargeback/defaults/main.yml b/roles/telemetry_chargeback/defaults/main.yml
index 64f07b7a1..1e64535ce 100644
--- a/roles/telemetry_chargeback/defaults/main.yml
+++ b/roles/telemetry_chargeback/defaults/main.yml
@@ -1,2 +1,32 @@
 ---
+# OpenStack CLI command
 openstack_cmd: "openstack"
+
+# Debug mode
+cloudkitty_debug: false
+
+# Directory paths
+logs_dir_zuul: "{{ ansible_env.HOME }}/ci-framework-data/logs"
+artifacts_dir_zuul: "{{ ansible_env.HOME }}/ci-framework-data/artifacts"
+cert_dir: "{{ ansible_user_dir }}/ck-certs"
+local_cert_dir: "{{ ansible_env.HOME }}/ci-framework-data/flush_certs"
+remote_cert_dir: "osp-certs"
+
+# Cloudkitty certificates and secrets
+cert_secret_name: "cert-cloudkitty-client-internal"
+client_secret: "secret/cloudkitty-lokistack-gateway-client-http"
+ca_configmap: "cm/cloudkitty-lokistack-ca-bundle"
+
+# LogQL Query
+logql_query: "{{ loki_query | default('{service=\"cloudkitty\"}') }}"
+
+# OpenShift/Kubernetes settings
+cloudkitty_namespace: "openstack"
+openstackpod: "openstackclient"
+
+# Time window settings
+lookback: 6
+limit: 50
+
+# List of test scenario files to run
+cloudkitty_test_scenarios: []
diff --git a/roles/telemetry_chargeback/files/gen_synth_loki_data.py b/roles/telemetry_chargeback/files/gen_synth_loki_data.py
index f05796e29..e3e0f5e12 100755
--- a/roles/telemetry_chargeback/files/gen_synth_loki_data.py
+++ b/roles/telemetry_chargeback/files/gen_synth_loki_data.py
@@ -1,14 +1,50 @@
+### Generated by Cursor
 """Generate synthetic Loki log data from a Jinja2 template."""
 import logging
 import argparse
 import json
+import sys
 import yaml
 from datetime import datetime, timezone, timedelta
 from pathlib import Path
-from typing import Dict, Any
+from typing import Dict, Any, List, Union
 from jinja2 import Environment
 
 
+def _get_value_for_step(
+    values: List[Union[int, float]],
+    step_idx: int,
+    num_steps: int
+) -> Union[int, float]:
+    """
+    Get the appropriate value from a list based on the current step index.
+
+    Values are distributed evenly across all steps. For example, if there are
+    12 steps and 4 values, each value covers 3 steps:
+    - Steps 0-2: values[0]
+    - Steps 3-5: values[1]
+    - Steps 6-8: values[2]
+    - Steps 9-11: values[3]
+
+    Args:
+        values: List of values to choose from.
+        step_idx: Current step index (0-based).
+        num_steps: Total number of steps.
+
+    Returns:
+        The value corresponding to the current step.
+    """
+    num_values = len(values)
+    if num_values == 1:
+        return values[0]
+
+    # Calculate how many steps each value covers
+    steps_per_value = num_steps / num_values
+    # Determine which value index to use, clamping to valid range
+    value_idx = min(int(step_idx // steps_per_value), num_values - 1)
+    return values[value_idx]
+
+
 # --- Configure logging with a default level that can be changed ---
 logging.basicConfig(
     level=logging.INFO,
@@ -73,7 +109,10 @@ def generate_loki_data(
     start_time: datetime,
     end_time: datetime,
     time_step_seconds: int,
-    config: Dict[str, Any]
+    config: Dict[str, Any],
+    project: Union[str, int, None] = None,
+    user: Union[str, int, None] = None,
+    reverse_timestamps: bool = False,
 ):
     """
     Generate synthetic Loki log data by preparing a data list and rendering.
@@ -85,6 +124,12 @@ def generate_loki_data(
         end_time (datetime): The end time for data generation.
         time_step_seconds (int): The duration of each log entry in seconds.
         config (Dict[str, Any]): Configuration dictionary loaded from file.
+        project: Optional value to inject as groupby.project in every
+            log entry in the output (overrides test_* file value when set).
+        user: Optional value to inject as groupby.user in every
+            log entry in the output (overrides test_* file value when set).
+        reverse_timestamps (bool): If True, reverse the order of timestamps
+            in the JSON output (newest first, oldest last).
     """
     # Hardcoded constant for invalid timestamps
     invalid_timestamp = "INVALID_TIMESTAMP"
@@ -175,39 +220,54 @@ def generate_loki_data(
             logger.error(f"Invalid log type configuration: {log_type_config}")
             raise ValueError("Each log type in log_types must be a dictionary")
 
-        log_type_name = log_type_config.get("name")
-        if not log_type_name:
-            logger.error("Each log type must have a 'name' field")
-            raise ValueError("Each log type must have a 'name' field")
+        # "type" is log-type identifier (dict key) and output value
+        type_key = log_type_config.get("type")
+        if not type_key:
+            logger.error("Each log type must have a 'type' field")
+            raise ValueError("Each log type must have a 'type' field")
 
         # Validate required fields
-        missing = [f for f in required_fields if f not in log_type_config]
+        # metadata is optional for generation; name is not a log-type field
+        required_for_item = [
+            f for f in required_fields
+            if f not in ("name", "metadata")
+        ]
+        missing = [f for f in required_for_item if f not in log_type_config]
         if missing:
             logger.error(
-                f"Missing required fields in {log_type_name} config: {missing}"
+                f"Missing required fields in {type_key!r} config: {missing}"
             )
             raise ValueError(
-                f"Missing required fields in {log_type_name}: {missing}"
+                f"Missing required fields in {type_key!r}: {missing}"
             )
 
         # Build groupby from config
         groupby = log_type_config.get("groupby", {})
         if not isinstance(groupby, dict):
             logger.error(
-                f"groupby must be a dictionary for {log_type_name}"
+                f"groupby must be a dictionary for {type_key!r}"
             )
             raise ValueError(
-                f"groupby must be a dictionary for {log_type_name}"
+                f"groupby must be a dictionary for {type_key!r}"
             )
 
-        log_types[log_type_name] = {
-            "type": log_type_config["type"],
+        # Ensure qty and price are lists for step-based distribution
+        qty_val = log_type_config["qty"]
+        price_val = log_type_config["price"]
+        qty_list = qty_val if isinstance(qty_val, list) else [qty_val]
+        price_list = price_val if isinstance(price_val, list) else [price_val]
+
+        log_types[type_key] = {
+            "type": type_key,
             "unit": log_type_config["unit"],
             "description": log_type_config.get("description"),
-            "qty": log_type_config["qty"],
-            "price": log_type_config["price"],
+            "qty": qty_list,
+            "price": price_list,
             "groupby": groupby.copy(),
-            "metadata": log_type_config.get("metadata", {})
+            "metadata": log_type_config.get("metadata", {}),
+            "factor": log_type_config.get("factor", 1),
+            "offset": log_type_config.get("offset", 0),
+            "mutate": log_type_config.get("mutate", "NONE")
         }
 
     # --- Step 3: Load template and render ---
@@ -231,15 +291,21 @@ def tojson_preserve_order(obj):
     # --- Render the template in one pass with all the data ---
     logger.info("Rendering final output...")
 
+    if reverse_timestamps:
+        log_data_list.reverse()
+        logger.debug(
+            "Reversed timestamp order (newest first, oldest last)."
+        )
+
+    # Calculate total number of steps for value distribution
+    num_steps = len(log_data_list)
+    logger.debug(f"Total number of time steps: {num_steps}")
+
     # Pre-calculate log types with date fields for each time step
     log_types_list = []
     for idx, item in enumerate(log_data_list):
-        # For the last entry, use end_time to ensure it shows today's date
-        if idx == len(log_data_list) - 1:
-            dt = end_time
-        else:
-            epoch_seconds = item["nanoseconds"] / 1_000_000_000
-            dt = datetime.fromtimestamp(epoch_seconds, tz=timezone.utc)
+        epoch_seconds = item["nanoseconds"] / 1_000_000_000
+        dt = datetime.fromtimestamp(epoch_seconds, tz=timezone.utc)
 
         iso_year, iso_week, _ = dt.isocalendar()
         day_of_year = dt.timetuple().tm_yday
@@ -267,6 +333,17 @@ def tojson_preserve_order(obj):
             log_type_with_dates = log_type_data.copy()
             log_type_with_dates["groupby"] = log_type_data["groupby"].copy()
             log_type_with_dates["groupby"].update(date_fields)
+            if project is not None:
+                log_type_with_dates["groupby"]["project"] = project
+            if user is not None:
+                log_type_with_dates["groupby"]["user"] = user
+            # Select qty and price based on step index distribution
+            log_type_with_dates["qty"] = _get_value_for_step(
+                log_type_data["qty"], idx, num_steps
+            )
+            log_type_with_dates["price"] = _get_value_for_step(
+                log_type_data["price"], idx, num_steps
+            )
             log_types_with_dates[log_type_name] = log_type_with_dates
 
         log_types_list.append(log_types_with_dates)
@@ -296,8 +373,19 @@ def tojson_preserve_order(obj):
         )
     except IOError as e:
         logger.error(f"Failed to write to output file '{output_path}': {e}")
-    except Exception as e:
-        logger.error(f"An unexpected error occurred during file write: {e}")
+        raise
+
+    # --- Step 5: Validate that the output is valid JSON ---
+    try:
+        with output_path.open('r') as f_in:
+            json.load(f_in)
+        logger.info("Output file validated as valid JSON.")
+    except json.JSONDecodeError as e:
+        logger.error(
+            f"Output file is not valid JSON: {e}. "
+            f"Delete '{output_path}' and fix the template or data."
+        )
+        sys.exit(1)
 
 
 def main():
@@ -324,8 +412,30 @@ def main():
         required=True,
         help="Path to the output file."
     )
+    parser.add_argument(
+        "-p", "--project-id",
+        type=str,
+        default=None,
+        metavar="ID",
+        help="Optional alphanumeric value to use as groupby.project in "
+             "every log entry in the output (overrides value from test file)."
+    )
+    parser.add_argument(
+        "-u", "--user-id",
+        type=str,
+        default=None,
+        metavar="ID",
+        help="Optional alphanumeric value to use as groupby.user in "
+             "every log entry in the output (overrides value from test file)."
+    )
 
     # --- Optional Utility Arguments ---
+    parser.add_argument(
+        "-r", "--reverse",
+        action="store_true",
+        help="Reverse timestamp order in JSON output: newest first, "
+             "oldest last (default is oldest first, newest last)."
+    )
     parser.add_argument(
         "--debug",
         action="store_true",
@@ -362,7 +472,10 @@ def main():
             start_time=start_time_utc,
             end_time=end_time_utc,
             time_step_seconds=step_seconds,
-            config=config
+            config=config,
+            project=args.project_id,
+            user=args.user_id,
+            reverse_timestamps=args.reverse,
         )
     except FileNotFoundError:
         logger.error(
diff --git a/roles/telemetry_chargeback/files/test_static.yml b/roles/telemetry_chargeback/files/test_static.yml
deleted file mode 100644
index f94a3c1d2..000000000
--- a/roles/telemetry_chargeback/files/test_static.yml
+++ /dev/null
@@ -1,57 +0,0 @@
-# Scenario configuration for synthetic Loki log data generation
-
-# Time range configuration
-generation:
-  days: 1
-  step_seconds: 7200
-
-# Log type definitions
-log_types:
-  - name: ceilometer_image_size
-    type: ceilometer_image_size
-    unit: MiB
-    description: null
-    qty: 20.6
-    price: 0.02
-    groupby:
-      id: cd65d30f-8b94-4fa3-95dc-e3b429f479b2
-      project_id: 0030775de80e4d84a4fd0d73e0a1b3a7
-      user_id: null
-    metadata:
-      container_format: bare
-      disk_format: qcow2
-
-  - name: instance
-    type: instance
-    unit: instance
-    description: null
-    qty: 1.0
-    price: 0.3
-    groupby:
-      id: de168c31-ed44-4a1a-a079-51bd238a91d6
-      project_id: 9cf5bcfc61a24682acc448af2d062ad2
-      user_id: c29ab6e886354bbd88ee9899e62d1d40
-    metadata:
-      flavor_name: m1.tiny
-      flavor_id: "1"
-      vcpus: ""
-
-# Required fields for validation (top-level fields only, not nested in groupby)
-required_fields:
-  - type
-  - unit
-  - qty
-  - price
-  - groupby
-  - metadata
-
-# Date field names to add to groupby
-date_fields:
-  - week_of_the_year
-  - day_of_the_year
-  - month
-  - year
-
-# Loki stream configuration
-loki_stream:
-  service: cloudkitty
diff --git a/roles/telemetry_chargeback/tasks/chargeback_tests.yml b/roles/telemetry_chargeback/tasks/chargeback_tests.yml
index 8519d7891..99ddcc44e 100644
--- a/roles/telemetry_chargeback/tasks/chargeback_tests.yml
+++ b/roles/telemetry_chargeback/tasks/chargeback_tests.yml
@@ -8,7 +8,9 @@
 
 - name: "Find the current value of hashmap"
   ansible.builtin.shell:
-    cmd: "{{ openstack_cmd }} rating module get hashmap -c Priority -f csv | tail -n +2"
+    cmd: "set -o pipefail && {{ openstack_cmd }} rating module get hashmap -c Priority -f csv | tail -n +2"
+  args:
+    executable: /bin/bash
   register: get_hashmap_priority
   changed_when: false
 
diff --git a/roles/telemetry_chargeback/tasks/cleanup_ck.yml b/roles/telemetry_chargeback/tasks/cleanup_ck.yml
new file mode 100644
index 000000000..01407d155
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/cleanup_ck.yml
@@ -0,0 +1,5 @@
+---
+- name: "Cleanup local certificates"
+  ansible.builtin.file:
+    path: "{{ local_cert_dir }}"
+    state: absent
diff --git a/roles/telemetry_chargeback/tasks/flush_loki_data.yml b/roles/telemetry_chargeback/tasks/flush_loki_data.yml
new file mode 100644
index 000000000..6ec05419d
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/flush_loki_data.yml
@@ -0,0 +1,52 @@
+---
+# Flush Loki Ingester Memory to Storage
+
+- name: "Flush execution inside OpenStack CLI"
+  block:
+    # create dir
+    - name: "Create directory inside OpenStack CLI"
+      ansible.builtin.command:
+        cmd: "oc exec -n {{ cloudkitty_namespace }} {{ openstackpod }} -- mkdir -p {{ remote_cert_dir }}"
+      changed_when: false
+
+    # certs to Flush data to Loki
+    - name: "Create directory to extract certificates"
+      ansible.builtin.file:
+        path: "{{ local_cert_dir }}"
+        state: directory
+        mode: '0755'
+
+    # copy all certs
+    - name: "Copy certificates to OpenStack CLI"
+      ansible.builtin.command:
+        cmd: "oc cp {{ local_cert_dir }}/. {{ cloudkitty_namespace }}/{{ openstackpod }}:{{ remote_cert_dir }}/"
+      changed_when: true
+
+    # flush loki
+    - name: "Trigger Loki ingester flush"
+      ansible.builtin.command:
+        cmd: >
+          oc exec -n {{ cloudkitty_namespace }} {{ openstackpod }} --
+          curl -v -X POST {{ ingester_flush_url }}
+          --cert {{ remote_cert_dir }}/tls.crt
+          --key {{ remote_cert_dir }}/tls.key
+          --cacert {{ remote_cert_dir }}/service-ca.crt
+      register: flush_response
+      changed_when: true
+      failed_when: flush_response.rc != 0
+
+    # Status
+    - name: "Verify flush status"
+      ansible.builtin.assert:
+        that:
+          - "'204' in flush_response.stderr or '200' in flush_response.stderr"
+        fail_msg: "Flush failed"
+        success_msg: "Ingester Memory Flushed successfully"
+
+  rescue:
+    - name: "Debug failure output"
+      ansible.builtin.debug:
+        msg:
+          - "Failure"
+          - "Stdout: {{ flush_response.stdout | default('') }}"
+          - "Stderr: {{ flush_response.stderr | default('') }}"
diff --git a/roles/telemetry_chargeback/tasks/gen_synth_loki_data.yml b/roles/telemetry_chargeback/tasks/gen_synth_loki_data.yml
index 0b8d5880d..ec80ca3cc 100644
--- a/roles/telemetry_chargeback/tasks/gen_synth_loki_data.yml
+++ b/roles/telemetry_chargeback/tasks/gen_synth_loki_data.yml
@@ -1,39 +1,40 @@
 ---
-- name: Check for preexisting output file
+- name: "Set variables dynamically for {{ item }}"
+  ansible.builtin.set_fact:
+    cloudkitty_data_file: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_data_suffix }}"
+    cloudkitty_synth_totals_file: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_totals_metrics_suffix }}"
+    cloudkitty_test_file: "{{ cloudkitty_scenario_dir }}/{{ item }}.yml"
+
+- name: "Check for preexisting output file"
   ansible.builtin.stat:
-    path: "{{ ck_output_file_local }}"
+    path: "{{ cloudkitty_data_file }}"
   register: file_preexists
 
-- name: TEST Generate Synthetic Data
+- name: "Generate Synthetic Data for {{ item }}"
   ansible.builtin.command:
     cmd: >
       python3 "{{ cloudkitty_synth_script }}"
+      -r
       --tmpl "{{ cloudkitty_data_template }}"
-      -t "{{ ck_data_config }}"
-      -o "{{ ck_output_file_local }}"
+      -t "{{ cloudkitty_test_file }}"
+      -o "{{ cloudkitty_data_file }}"
+      {% if cloudkitty_project_id is defined and cloudkitty_project_id %} -p "{{ cloudkitty_project_id }}"{% endif %}
   register: script_output
-  when: not file_preexists.stat.exists | bool 
+  when: not file_preexists.stat.exists | bool
   changed_when: script_output.rc == 0
 
-- name: Read the content of the file
-  ansible.builtin.slurp:
-    src: "{{ ck_output_file_local }}"
-  register: slurped_file
-
-- name: TEST Validate JSON format of synthetic data file
-  ansible.builtin.assert:
-    that:
-    # This filter will trigger a task failure if the string isn't valid JSON
-      - slurped_file.content | b64decode | from_json is defined
-    fail_msg: "The file does not contain valid JSON format."
-    success_msg: "JSON format validated successfully."
-
-- name: Print output_file_remote path
-  ansible.builtin.debug:
-    msg: "Synthetic data file: {{ ck_output_file_remote }}"
+- name: "Generate chargeback rating from synthetic data file {{ item }}"
+  ansible.builtin.command:
+    cmd: >
+      python3 "{{ cloudkitty_summary_script }}"
+      -j "{{ cloudkitty_data_file }}"
+      -o "{{ cloudkitty_synth_totals_file }}"
+      --debug "{{ cloudkitty_debug_dir }}"
+  register: synth_rating_info
+  when: not file_preexists.stat.exists | bool
+  changed_when: synth_rating_info.rc == 0
 
-- name: Copy output file to remote host
-  ansible.builtin.copy:
-    src: "{{ ck_output_file_local }}"
-    dest: "{{ ck_output_file_remote }}"
-    mode: '0644'
+- name: "Load metrics from YAML file"
+  ansible.builtin.include_vars:
+    file: "{{ cloudkitty_synth_totals_file }}"
+    name: synth_data_rates
diff --git a/roles/telemetry_chargeback/tasks/ingest_loki_data.yml b/roles/telemetry_chargeback/tasks/ingest_loki_data.yml
new file mode 100644
index 000000000..a53751f3f
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/ingest_loki_data.yml
@@ -0,0 +1,42 @@
+---
+# Ingest data log to Loki that is generated from gen_synth_loki_data.yml
+
+- name: "Ingest data log to Loki via API"
+  block:
+
+    - name: "Read log file content"
+      ansible.builtin.slurp:
+        src: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_data_suffix }}"
+      register: log_file_content
+
+    - name: "Push data to Loki"
+      ansible.builtin.uri:
+        url: "{{ loki_push_url }}"
+        method: POST
+        body: "{{ log_file_content['content'] | b64decode | from_json }}"
+        body_format: json
+        client_cert: "{{ cert_dir }}/tls.crt"
+        client_key: "{{ cert_dir }}/tls.key"
+        validate_certs: false
+        status_code: 204
+        return_content: true
+      register: loki_response
+      ignore_errors: false
+      failed_when: loki_response.status != 204
+
+    # Success
+    - name: "Confirm ingestion success"
+      ansible.builtin.debug:
+        msg: "Ingestion Successful!"
+
+  rescue:
+    # Rescue block
+    - name: "Debug failure"
+      ansible.builtin.debug:
+        msg: "{{ loki_response.status | default('N/A') }}"
+
+    # Failure
+    - name: "Report ingestion failure"
+      ansible.builtin.fail:
+        msg: "Ingestion Failed"
+      ignore_errors: false
diff --git a/roles/telemetry_chargeback/tasks/load_loki_data.yml b/roles/telemetry_chargeback/tasks/load_loki_data.yml
new file mode 100644
index 000000000..a2a1e129f
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/load_loki_data.yml
@@ -0,0 +1,12 @@
+---
+- name: "Ingest CloudKitty data log for {{ item }}"
+  ansible.builtin.include_tasks:
+    file: ingest_loki_data.yml
+
+- name: "Flush data to Loki storage for {{ item }}"
+  ansible.builtin.include_tasks:
+    file: flush_loki_data.yml
+
+- name: "Retrieve data log from Loki for {{ item }}"
+  ansible.builtin.include_tasks:
+    file: retrieve_loki_data.yml
diff --git a/roles/telemetry_chargeback/tasks/loki_rate.yml b/roles/telemetry_chargeback/tasks/loki_rate.yml
new file mode 100644
index 000000000..d96a4564a
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/loki_rate.yml
@@ -0,0 +1,28 @@
+---
+- name: "TEST Get Rate and Qty by type from CloudKitty {{ item }}"
+  ansible.builtin.command:
+    cmd: "{{ openstack_cmd }} --rating-api-version 2 rating summary get -f yaml -g type"
+  register: cost_totals_by_type
+  changed_when: false
+  failed_when: cost_totals_by_type.rc != 0
+
+- name: "**INFO** Print the rating by type {{ item }}"
+  ansible.builtin.debug:
+    var: cost_totals_by_type.stdout
+
+- name: "Output saved as yaml {{ item }}"
+  ansible.builtin.copy:
+    content: "{{ cost_totals_by_type.stdout }}"
+    dest: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_totals_suffix }}"
+    mode: '0644'
+
+- name: "TEST Get Rate and Qty Summary from CloudKitty {{ item }}"
+  ansible.builtin.command:
+    cmd: "{{ openstack_cmd }} --rating-api-version 2 rating summary get -f yaml -b \"{{ synth_data_rates.time.begin_step.begin }}\" -e \"{{ synth_data_rates.time.end_step.end }}\""
+  register: cost_totals_summary
+  changed_when: false
+  failed_when: cost_totals_summary.rc != 0
+
+- name: "**INFO** Print the rating summary {{ item }}"
+  ansible.builtin.debug:
+    var: cost_totals_summary.stdout
diff --git a/roles/telemetry_chargeback/tasks/main.yml b/roles/telemetry_chargeback/tasks/main.yml
index 98a94b233..c8963bb4b 100644
--- a/roles/telemetry_chargeback/tasks/main.yml
+++ b/roles/telemetry_chargeback/tasks/main.yml
@@ -1,6 +1,65 @@
 ---
-- name: "Validate Chargeback Feature"
+- name: "Validate Chargeback Feature deployed correctly"
   ansible.builtin.include_tasks: "chargeback_tests.yml"
 
-- name: "Generate Synthetic Data"
-  ansible.builtin.include_tasks: "gen_synth_loki_data.yml"
+- name: "Setup Loki Environment"
+  ansible.builtin.include_tasks: "setup_loki_env.yml"
+
+- name: "CloudKitty debug ON/OFF"
+  ansible.builtin.set_fact:
+    cloudkitty_debug_dir: "{{ (cloudkitty_debug | bool) | ternary(artifacts_dir_zuul + '/debug_ck_db', '') }}"
+
+- name: "Get admin project ID for CI"
+  ansible.builtin.command:
+    cmd: "{{ openstack_cmd }} project show admin -f value -c id"
+  register: get_admin_project_id
+  changed_when: false
+  failed_when: false
+
+- name: "Set admin project ID for CI"
+  ansible.builtin.set_fact:
+    cloudkitty_project_id: "{{ (get_admin_project_id.stdout | trim) | default('') }}"
+
+- name: "Get admin user ID for CI"
+  ansible.builtin.command:
+    cmd: "{{ openstack_cmd }} user show admin -f value -c id"
+  register: get_admin_user_id
+  changed_when: false
+  failed_when: false
+
+- name: "Set admin user ID for CI"
+  ansible.builtin.set_fact:
+    cloudkitty_user_id: "{{ (get_admin_user_id.stdout | trim) | default('') }}"
+
+- name: "Auto-discover test scenarios"
+  when: cloudkitty_test_scenarios | length == 0
+  block:
+    - name: "Find test files"
+      ansible.builtin.find:
+        paths: "{{ cloudkitty_scenario_dir }}"
+        patterns: "test_*.yml"
+      register: found_files_raw
+
+    - name: "Set scenario list from discovered files"
+      ansible.builtin.set_fact:
+        found_files: "{{ found_files_raw.files | map(attribute='path') | map('basename') | map('regex_replace', '\\.yml$', '') | list }}"
+
+- name: "Set scenario list from user-provided variable"
+  ansible.builtin.set_fact:
+    found_files: "{{ cloudkitty_test_scenarios }}"
+  when: cloudkitty_test_scenarios | length > 0
+
+- name: "Run scenario file through workflow"
+  when: found_files | length > 0
+  block:
+    - name: "Process and Loop if files exist"
+      ansible.builtin.include_tasks: run_test_scenarios.yml
+      loop: "{{ found_files }}"
+
+    - name: "Cleanup after job run"
+      ansible.builtin.include_tasks: cleanup_ck.yml
+
+  rescue:
+    - name: "Log failure"
+      ansible.builtin.debug:
+        msg: "Running test scenarios loop failed."
diff --git a/roles/telemetry_chargeback/tasks/retrieve_loki_data.yml b/roles/telemetry_chargeback/tasks/retrieve_loki_data.yml
new file mode 100644
index 000000000..adaa2b34a
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/retrieve_loki_data.yml
@@ -0,0 +1,71 @@
+---
+- name: "Expected Count {{ item }}"
+  ansible.builtin.debug:
+    msg: "Input file has {{ synth_data_rates.data_log.log_count }} data entries that Loki has to return"
+
+# Query Loki
+- name: "Retrieve Logs from Loki via API {{ item }}"
+  block:
+    - name: "Query Loki API"
+      ansible.builtin.uri:
+        url: "{{ loki_query_url }}?query={{ logql_query | urlencode }}&start={{ synth_data_rates.time.begin_step.nanosec }}&limit={{ limit }}"
+        method: GET
+        client_cert: "{{ cert_dir }}/tls.crt"
+        client_key: "{{ cert_dir }}/tls.key"
+        ca_path: "{{ cert_dir }}/ca.crt"
+        validate_certs: false
+        return_content: true
+        body_format: json
+      register: loki_response
+      # Wait condition
+      until:
+        - loki_response.status == 200
+        - loki_response.json.status == 'success'
+        - loki_response.json.data.result | length > 0
+        - (loki_response.json.data.result | map(attribute='values') | map('length') | sum) >= (synth_data_rates.data_log.log_count | int)
+      retries: 25
+      delay: 60
+
+    - name: "Save Loki Data to JSON file"
+      ansible.builtin.copy:
+        content: "{{ loki_response.json | to_json }}"
+        dest: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_data_suffix }}"
+        mode: '0644'
+
+    # Validate
+    - name: "Verify Data Integrity {{ item }}"
+      vars:
+        actual_count: "{{ loki_response.json.data.result | map(attribute='values') | map('length') | sum }}"
+      ansible.builtin.assert:
+        that:
+          - loki_response.json.status == 'success'
+          - loki_response.json.data.result | length > 0
+          - actual_count | int == (synth_data_rates.data_log.log_count | int)
+        fail_msg: >-
+          Query did not return all data entries. Expected
+          {{ synth_data_rates.data_log.log_count }} log entries, but Loki
+          only returned {{ actual_count }}
+        success_msg: "Query returned all data entries. Input file had {{ synth_data_rates.data_log.log_count }} entries and Loki returned {{ actual_count }}"
+
+  rescue:
+    - name: "Debug failure"
+      ansible.builtin.debug:
+        msg:
+          - "Status: {{ loki_response.status | default('Unknown') }}"
+          - "Body: {{ loki_response.content | default('No Content') }}"
+          - "Msg: {{ loki_response.msg | default('Request failed') }}"
+
+    # Failure
+    - name: "Report Retrieval Failure"
+      ansible.builtin.fail:
+        msg: "Retrieval Failed"
+
+- name: "Generate chargeback stats from Loki-retrieved data file: {{ item }}"
+  ansible.builtin.command:
+    cmd: >
+      python3 "{{ cloudkitty_summary_script }}"
+      -j "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_data_suffix }}"
+      -o "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_totals_metrics_suffix }}"
+      --debug "{{ cloudkitty_debug_dir }}"
+  register: loki_retrieved_summary_info
+  changed_when: loki_retrieved_summary_info.rc == 0
diff --git a/roles/telemetry_chargeback/tasks/run_test_scenarios.yml b/roles/telemetry_chargeback/tasks/run_test_scenarios.yml
new file mode 100644
index 000000000..5addb4a22
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/run_test_scenarios.yml
@@ -0,0 +1,53 @@
+---
+- name: "Generate Synthetic Data for each file: {{ item }}"
+  ansible.builtin.include_tasks: "gen_synth_loki_data.yml"
+
+- name: "Load data to Loki: {{ item }}"
+  ansible.builtin.include_tasks: "load_loki_data.yml"
+
+- name: "Get total rate from Loki: {{ item }}"
+  ansible.builtin.include_tasks: "loki_rate.yml"
+
+#### diff uploaded data totals vs download data totals
+- name: "Check synthetic totals file exists"
+  ansible.builtin.stat:
+    path: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_totals_metrics_suffix }}"
+  register: synth_totals_stat
+
+- name: "Check Loki totals file exists"
+  ansible.builtin.stat:
+    path: "{{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_totals_metrics_suffix }}"
+  register: loki_totals_stat
+
+- name: "TEST Totals files exist {{ item }}"
+  ansible.builtin.assert:
+    that:
+      - synth_totals_stat.stat.exists | default(false)
+      - loki_totals_stat.stat.exists | default(false)
+    fail_msg: |
+      FAILED! Required file(s) missing for scenario {{ item }}:
+      - {{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_totals_metrics_suffix }}
+      - {{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_totals_metrics_suffix }}
+    success_msg: |
+      PASSED! Required file(s) exist {{ item }}:
+      - {{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_totals_metrics_suffix }}
+      - {{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_totals_metrics_suffix }}
+
+- name: "Diff synthetic totals vs Loki totals {{ item }}"
+  ansible.builtin.command:
+    cmd: >
+      diff
+      {{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_synth_totals_metrics_suffix }}
+      {{ artifacts_dir_zuul }}/{{ item }}{{ cloudkitty_loki_totals_metrics_suffix }}
+  register: yaml_diff
+  failed_when: false
+  changed_when: false
+
+- name: "TEST Compare synthetic data vs Loki data results {{ item }}"
+  ansible.builtin.assert:
+    that:
+      - yaml_diff.rc == 0
+    fail_msg: |
+      FAILED! {{ item }} - Files differ:
+      {{ yaml_diff.stdout }}
+    success_msg: "PASSED! {{ item }} - Data totals are identical."
diff --git a/roles/telemetry_chargeback/tasks/setup_loki_env.yml b/roles/telemetry_chargeback/tasks/setup_loki_env.yml
new file mode 100644
index 000000000..e4a80250f
--- /dev/null
+++ b/roles/telemetry_chargeback/tasks/setup_loki_env.yml
@@ -0,0 +1,56 @@
+---
+# Setup Loki Environment
+
+# Dynamic URL's
+- name: "Get Loki Public Route Host"
+  ansible.builtin.command:
+    cmd: |
+      oc get route cloudkitty-lokistack -n {{ cloudkitty_namespace }} -o "jsonpath={.spec.host}"
+  register: loki_route
+  changed_when: false
+
+- name: "Set Loki URLs"
+  ansible.builtin.set_fact:
+    # Base URL
+    loki_base_url: "https://{{ loki_route.stdout }}"
+
+    # Internal Flush URL (Service DNS: https://<service>.<namespace>.svc:3100/flush)
+    ingester_flush_url: "https://cloudkitty-lokistack-ingester-http.{{ cloudkitty_namespace }}.svc:3100/flush"
+
+- name: "Set Derived Loki URLs"
+  ansible.builtin.set_fact:
+    loki_push_url: "{{ loki_base_url }}/api/logs/v1/cloudkitty/loki/api/v1/push"
+    loki_query_url: "{{ loki_base_url }}/api/logs/v1/cloudkitty/loki/api/v1/query_range"
+
+- name: "Debug URLs"
+  ansible.builtin.debug:
+    msg:
+      - "Loki Route: {{ loki_base_url }}"
+      - "Push URL:   {{ loki_push_url }}"
+      - "Flush URL:  {{ ingester_flush_url }}"
+      - "Query URL:  {{ loki_query_url }}"
+
+# Certs to Ingest & Retrieve data to/from Loki
+- name: "Ensure Local Certificate Directory Exists"
+  ansible.builtin.file:
+    path: "{{ cert_dir }}"
+    state: directory
+    mode: '0755'
+
+- name: "Extract Certificates from OpenShift Secret"
+  ansible.builtin.command:
+    cmd: |
+      oc extract secret/{{ cert_secret_name }} --to={{ cert_dir }} --confirm -n {{ cloudkitty_namespace }}
+  changed_when: true
+
+- name: "Extract Client Certificates"
+  ansible.builtin.command:
+    cmd: |
+      oc extract {{ client_secret }} --to={{ local_cert_dir }} --confirm -n {{ cloudkitty_namespace }}
+  changed_when: true
+
+- name: "Extract CA Bundle"
+  ansible.builtin.command:
+    cmd: |
+      oc extract {{ ca_configmap }} --to={{ local_cert_dir }} --confirm -n {{ cloudkitty_namespace }}
+  changed_when: true
diff --git a/roles/telemetry_chargeback/templates/loki_data_templ.j2 b/roles/telemetry_chargeback/templates/loki_data_templ.j2
index b676f3013..c7f96f0c0 100644
--- a/roles/telemetry_chargeback/templates/loki_data_templ.j2
+++ b/roles/telemetry_chargeback/templates/loki_data_templ.j2
@@ -13,7 +13,10 @@
     "qty": entry_data.qty,
     "price": entry_data.price,
     "groupby": entry_data.groupby,
-    "metadata": entry_data.metadata
+    "metadata": entry_data.metadata,
+    "factor": entry_data.factor,
+    "offset": entry_data.offset,
+    "mutate": entry_data.mutate
 } -%}
 [
 "{{ item.nanoseconds }}",
diff --git a/roles/telemetry_chargeback/vars/main.yml b/roles/telemetry_chargeback/vars/main.yml
index 5d7a47804..f694c84c6 100644
--- a/roles/telemetry_chargeback/vars/main.yml
+++ b/roles/telemetry_chargeback/vars/main.yml
@@ -1,6 +1,9 @@
 ---
-logs_dir_zuul: "/home/zuul/ci-framework-data/logs"
-artifacts_dir_zuul: "/home/zuul/ci-framework-data/artifacts"
+# Scenario and script paths (using role_path)
+cloudkitty_scenario_dir: "{{ role_path }}/files"
+cloudkitty_synth_script: "{{ role_path }}/files/gen_synth_loki_data.py"
+cloudkitty_data_template: "{{ role_path }}/templates/loki_data_templ.j2"
+cloudkitty_summary_script: "{{ role_path }}/files/gen_db_summary.py"
 
 cloudkitty_synth_script: "{{ role_path }}/files/gen_synth_loki_data.py"
 cloudkitty_data_template: "{{ role_path }}/templates/loki_data_templ.j2"