diff --git a/.github/workflows/test-main.yaml b/.github/workflows/test-main.yaml
new file mode 100644
index 0000000..6ce461c
--- /dev/null
+++ b/.github/workflows/test-main.yaml
@@ -0,0 +1,32 @@
+name: Run DRP Main
+
+on:
+  push:
+    branches: [main, mike/**]
+  pull_request:
+    branches: [main]
+
+jobs:
+  run-main:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install project dependencies
+        run: |
+          python -m venv venv
+          source venv/bin/activate
+          pip install --upgrade pip
+          pip install -e .
+
+      - name: Run main.py
+        run: |
+          source venv/bin/activate
+          python src/main.py
diff --git a/.gitignore b/.gitignore
index 068ef90..7d20e5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -172,4 +172,6 @@ cython_debug/
 .pypirc
 
 # Output files
-output/*
\ No newline at end of file
+output/*
+
+.python-version
\ No newline at end of file
diff --git a/config.yaml b/config/config.yaml
similarity index 100%
rename from config.yaml
rename to config/config.yaml
diff --git a/main.py b/main.py
deleted file mode 100644
index ffeabe4..0000000
--- a/main.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# main.py
-import os
-if "PREFECT_API_URL" in os.environ:
-    del os.environ["PREFECT_API_URL"]
-import yaml
-from lris2_drp.flows import batch_process_all_flats
-
-def load_config(config_path="config.yaml"):
-    """Load configuration from a YAML file."""
-    with open(config_path, "r") as f:
-        return yaml.safe_load(f)
-
-if __name__ == "__main__":
-    config = load_config()
-    batch_process_all_flats(
-        input_dir=config["input_dir"],
-        output_dir=config["output_dir"]
-    )
diff --git a/output/.gitignore b/output/.gitignore
deleted file mode 100644
index c9302cf..0000000
--- a/output/.gitignore
+++ /dev/null
@@ -1,4 +0,0 @@
-# Ignore everything in this directory
-*
-# Except this .gitignore file
-!.gitignore
diff --git a/pyproject.toml b/pyproject.toml
index 04c7ad9..082e8f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,18 +1,18 @@
 [build-system]
 # Specifies the build system to use. 
-requires = ["setuptools>=42"]
+requires = ["setuptools>=61"]
 build-backend = "setuptools.build_meta"
 
 [project]
-# Basic information about your project.
 name = "lris2-drp" 
 version = "0.1.0" 
 dependencies = [
-  "prefect>=3.4.11",
+  "prefect",
   "astropy",
   "numpy",
   "matplotlib",
-  "scipy"
+  "scipy",
+  "keckdrpframework"
 ]
 requires-python = ">=3.9"
 authors = [
@@ -24,7 +24,6 @@ maintainers = [
 description = "Data Reduction Pipeline for LRIS2"
 readme = "README.md" 
 license = { text = "MIT" }
-keywords = ["example", "package", "keywords"] 
 classifiers = [
   "Programming Language :: Python :: 3",
   "License :: OSI Approved :: MIT License",
@@ -41,17 +40,13 @@ Repository = "https://github.com/CaltechOpticalObservatories/lris2-drp"
 "Bug Tracker" = "https://github.com/CaltechOpticalObservatories/lris2-drp/issues" 
 #Changelog = "https://github.com/yourusername/your-repo/blob/master/CHANGELOG.md"
 
-[project.scripts]
-# Defines command-line scripts for your package. Replace with your script and function.
-lris2-drp = "lris2_drp.main:main"
 
 [project.optional-dependencies]
-# Optional dependencies that can be installed with extra tags, like "dev".
 dev = [
-  "pytest", 
+  "pytest",
   "black",
   "flake8"
 ]
 
 [tool.setuptools]
-packages = { find = { include = ["lris2_drp"] } }
+packages = { find = { include = ["src"] } }
diff --git a/lris2_drp/__init__.py b/src/core/__init__.py
similarity index 100%
rename from lris2_drp/__init__.py
rename to src/core/__init__.py
diff --git a/lris2_drp/flat.py b/src/core/flat.py
similarity index 100%
rename from lris2_drp/flat.py
rename to src/core/flat.py
diff --git a/lris2_drp/flows.py b/src/core/flows.py
similarity index 92%
rename from lris2_drp/flows.py
rename to src/core/flows.py
index 3d9f9dc..9e07c7a 100644
--- a/lris2_drp/flows.py
+++ b/src/core/flows.py
@@ -1,14 +1,14 @@
 from prefect import flow, task, get_run_logger
 from prefect.task_runners import ConcurrentTaskRunner
 import os
-from lris2_drp.flat import (
+from core.flat import (
     load_flat_frame,
     normalize_flat,
     create_flat_correction,
     save_corrected_fits,
 )
-from lris2_drp.tracing import trace_slits_1d, save_trace_solution
-from lris2_drp.qa import generate_qa_plot
+from core.tracing import trace_slits_1d, save_trace_solution
+from core.qa import generate_qa_plot
 
 @task(name="Process Single LRIS2 Flat Frame", description="Run all DRP steps on a single flat FITS file")
 def process_flat_frame(filepath: str, output_dir: str):
diff --git a/lris2_drp/qa.py b/src/core/qa.py
similarity index 67%
rename from lris2_drp/qa.py
rename to src/core/qa.py
index d9168fe..dfa0f26 100644
--- a/lris2_drp/qa.py
+++ b/src/core/qa.py
@@ -9,10 +9,15 @@
 @task(name="Generate QA Plot", description="Save normalized flat as PNG", tags=["qa", "plot"])
 def generate_qa_plot(data: np.ndarray, output_path: str, title: str = "Flat QA") -> str:
     """Generate a QA plot for the normalized flat field data."""
+
+    if data is None or not hasattr(data, "shape") or data.ndim != 2:
+        raise ValueError(f"Invalid data shape for QA plot: {getattr(data, 'shape', None)}")
+
     os.makedirs(os.path.dirname(output_path), exist_ok=True)
     plt.figure(figsize=(10, 4))
-    im = plt.imshow(data, cmap="gray", aspect="auto", origin="lower")
-    plt.colorbar(im)
+    fig, ax = plt.subplots()
+    im = ax.imshow(data, cmap="gray", aspect="auto", origin="lower")
+    fig.colorbar(im, ax=ax)
     plt.title(title)
     plt.savefig(output_path)
     plt.close()
diff --git a/lris2_drp/tracing.py b/src/core/tracing.py
similarity index 100%
rename from lris2_drp/tracing.py
rename to src/core/tracing.py
diff --git a/src/keck_primitives/__init__.py b/src/keck_primitives/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/keck_primitives/normalize_flat.py b/src/keck_primitives/normalize_flat.py
new file mode 100644
index 0000000..b702946
--- /dev/null
+++ b/src/keck_primitives/normalize_flat.py
@@ -0,0 +1,13 @@
+import numpy as np
+from keckdrpframework.models.arguments import Arguments
+from keckdrpframework.primitives.base_primitive import BasePrimitive
+
+class NormalizeFlat(BasePrimitive):
+    def __init__(self, action, context):
+        super().__init__(action, context)
+
+    def _perform(self, input_args: Arguments, config: dict) -> dict:
+        data = input_args["flat_data"]
+        median = np.median(data[data > 0])
+        norm = data / median
+        return {"norm_data": norm}
diff --git a/src/keck_primitives/trace_slits.py b/src/keck_primitives/trace_slits.py
new file mode 100644
index 0000000..195d7cc
--- /dev/null
+++ b/src/keck_primitives/trace_slits.py
@@ -0,0 +1,14 @@
+import numpy as np
+from scipy.signal import find_peaks
+from keckdrpframework.models.arguments import Arguments
+from keckdrpframework.primitives.base_primitive import BasePrimitive
+
+class TraceSlits1D(BasePrimitive):
+    def __init__(self, action, context):
+        super().__init__(action, context)
+
+    def _perform(self, input_args: Arguments, config: dict) -> dict:
+        data = input_args["flat_data"]
+        profile = np.median(data, axis=1)
+        peaks, _ = find_peaks(profile, distance=20, prominence=0.05)
+        return {"slit_positions": list(peaks)}
diff --git a/src/keck_primitives/utils.py b/src/keck_primitives/utils.py
new file mode 100644
index 0000000..53d134b
--- /dev/null
+++ b/src/keck_primitives/utils.py
@@ -0,0 +1,15 @@
+"""Utility functions and classes for Keck DRP primitives."""
+
+class DummyAction:
+    def __init__(self, args=None):
+        self.args = args or {}
+        self.action_type = "dummy"
+        self.timestamp = None
+        self.context = None
+        self.logger = None
+
+class DummyContext:
+    def __init__(self, logger=None, config=None):
+        import logging
+        self.logger = logger or logging.getLogger("dummy_logger")
+        self.config = config or {}
diff --git a/src/main.py b/src/main.py
new file mode 100644
index 0000000..ee46364
--- /dev/null
+++ b/src/main.py
@@ -0,0 +1,23 @@
+"""
+Main entry point for the LRIS2 Data Reduction Pipeline (DRP).
+This script initializes the pipeline and processes all flat field FITS files
+found in the specified input directory, saving the results to the output directory.
+"""
+import yaml
+import os
+from workflows.flows.batch_flat_flow import batch_process_all_flats
+
+def load_config(config_path="config/config.yaml"):
+    """Load configuration from a YAML file."""
+    with open(config_path, "r") as f:
+        return yaml.safe_load(f)
+
+if __name__ == "__main__":
+    config = load_config()
+    input_dir = config["input_dir"]
+    output_dir = config["output_dir"]
+
+    os.makedirs(output_dir, exist_ok=True)
+
+    print(f"🟢 Starting batch processing of FITS files in {input_dir}")
+    batch_process_all_flats(input_dir=input_dir, output_dir=output_dir)
diff --git a/src/workflows/__init__.py b/src/workflows/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/workflows/flows/__init__.py b/src/workflows/flows/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/workflows/flows/batch_flat_flow.py b/src/workflows/flows/batch_flat_flow.py
new file mode 100644
index 0000000..2703fd9
--- /dev/null
+++ b/src/workflows/flows/batch_flat_flow.py
@@ -0,0 +1,61 @@
+import os
+from prefect import flow, task, get_run_logger
+from prefect.task_runners import ConcurrentTaskRunner
+from workflows.prefect_tasks.load_flat import load_flat_frame_task
+from workflows.prefect_tasks.normalize_flat import normalize_flat_task
+from workflows.prefect_tasks.create_correction import create_flat_correction_task
+from workflows.prefect_tasks.trace_slits import trace_slits_task
+from workflows.prefect_tasks.save_corrected import save_corrected_fits_task
+from workflows.prefect_tasks.save_trace import save_trace_solution_task
+from workflows.prefect_tasks.qa_plot import generate_qa_plot_task
+
+
+@task(name="Process Single Flat Frame")
+def process_single_flat_frame(flat_fits_path: str, output_dir: str):
+    """Process a single LRIS2 flat FITS file through all DRP steps."""
+    logger = get_run_logger()
+    filename = os.path.splitext(os.path.basename(flat_fits_path))[0]
+
+    # Construct output paths
+    corrected_output = os.path.join(output_dir, filename, "flat_corrected.fits")
+    trace_output = os.path.join(output_dir, filename, "slit_trace.txt")
+    qa_output = os.path.join(output_dir, filename, "flat_norm_qa.png")
+
+    # Ensure output dirs
+    os.makedirs(os.path.dirname(corrected_output), exist_ok=True)
+
+    # Load FITS
+    data, header = load_flat_frame_task(flat_fits_path)
+
+    # DRP steps
+    norm = normalize_flat_task(data)
+    correction = create_flat_correction_task(norm)
+    slit_positions = trace_slits_task(data)
+
+    # Save outputs
+    save_corrected_fits_task(data, correction, header, corrected_output)
+    save_trace_solution_task(slit_positions, trace_output)
+    generate_qa_plot_task(norm, qa_output)
+
+    logger.info(f"Finished processing {flat_fits_path}")
+
+@flow(
+    name="Batch Process LRIS2 Flats",
+    description="Process all flat frames concurrently using Prefect",
+    task_runner=ConcurrentTaskRunner(max_workers=2),  # You can adjust this
+)
+def batch_process_all_flats(input_dir: str, output_dir: str):
+    """Process all FITS files in a directory using concurrent subflows."""
+    logger = get_run_logger()
+
+    fits_files = [
+        os.path.join(input_dir, f)
+        for f in os.listdir(input_dir)
+        if f.lower().endswith(".fits")
+    ]
+    logger.info(f"Found {len(fits_files)} FITS files in {input_dir}.")
+
+    futures = [process_single_flat_frame.submit(fp, output_dir) for fp in fits_files]
+
+    for future in futures:
+        future.result()
diff --git a/src/workflows/prefect_tasks/__init__.py b/src/workflows/prefect_tasks/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/workflows/prefect_tasks/create_correction.py b/src/workflows/prefect_tasks/create_correction.py
new file mode 100644
index 0000000..349e050
--- /dev/null
+++ b/src/workflows/prefect_tasks/create_correction.py
@@ -0,0 +1,6 @@
+from prefect import task
+from core.flat import create_flat_correction
+
+@task(name="Create Flat Correction")
+def create_flat_correction_task(norm_data):
+    return create_flat_correction.fn(norm_data)
\ No newline at end of file
diff --git a/src/workflows/prefect_tasks/load_flat.py b/src/workflows/prefect_tasks/load_flat.py
new file mode 100644
index 0000000..62089c8
--- /dev/null
+++ b/src/workflows/prefect_tasks/load_flat.py
@@ -0,0 +1,6 @@
+from prefect import task
+from core.flat import load_flat_frame
+
+@task(name="Load Flat Frame")
+def load_flat_frame_task(filepath: str):
+    return load_flat_frame.fn(filepath)
\ No newline at end of file
diff --git a/src/workflows/prefect_tasks/normalize_flat.py b/src/workflows/prefect_tasks/normalize_flat.py
new file mode 100644
index 0000000..6599645
--- /dev/null
+++ b/src/workflows/prefect_tasks/normalize_flat.py
@@ -0,0 +1,16 @@
+from prefect import task
+from keckdrpframework.models.arguments import Arguments
+from keck_primitives.normalize_flat import NormalizeFlat
+from keck_primitives.utils import DummyAction, DummyContext
+
+
+@task(name="Normalize Flat")
+def normalize_flat_task(data):
+    args = Arguments()
+    args["flat_data"] = data
+
+    action = DummyAction(args=args)
+    context = DummyContext()
+
+    result = NormalizeFlat(action, context)._perform(args, config={})
+    return result["norm_data"]
diff --git a/src/workflows/prefect_tasks/qa_plot.py b/src/workflows/prefect_tasks/qa_plot.py
new file mode 100644
index 0000000..fc23cad
--- /dev/null
+++ b/src/workflows/prefect_tasks/qa_plot.py
@@ -0,0 +1,6 @@
+from prefect import task
+from core.qa import generate_qa_plot
+
+@task(name="Generate QA Plot")
+def generate_qa_plot_task(data, output_path: str, title: str = "Flat QA"):
+    return generate_qa_plot.fn(data, output_path, title)
\ No newline at end of file
diff --git a/src/workflows/prefect_tasks/save_corrected.py b/src/workflows/prefect_tasks/save_corrected.py
new file mode 100644
index 0000000..61d1cb3
--- /dev/null
+++ b/src/workflows/prefect_tasks/save_corrected.py
@@ -0,0 +1,6 @@
+from prefect import task
+from core.flat import save_corrected_fits
+
+@task(name="Save Corrected FITS")
+def save_corrected_fits_task(original_data, correction, header, output_path: str):
+    return save_corrected_fits.fn(original_data, correction, header, output_path)
\ No newline at end of file
diff --git a/src/workflows/prefect_tasks/save_trace.py b/src/workflows/prefect_tasks/save_trace.py
new file mode 100644
index 0000000..d78b3bc
--- /dev/null
+++ b/src/workflows/prefect_tasks/save_trace.py
@@ -0,0 +1,6 @@
+from prefect import task
+from core.tracing import save_trace_solution
+
+@task(name="Save Trace Solution")
+def save_trace_solution_task(slit_positions, output_path: str):
+    return save_trace_solution.fn(slit_positions, output_path)
\ No newline at end of file
diff --git a/src/workflows/prefect_tasks/trace_slits.py b/src/workflows/prefect_tasks/trace_slits.py
new file mode 100644
index 0000000..74f7b9c
--- /dev/null
+++ b/src/workflows/prefect_tasks/trace_slits.py
@@ -0,0 +1,14 @@
+from prefect import task
+from keck_primitives.trace_slits import TraceSlits1D
+from keckdrpframework.models.arguments import Arguments
+from keck_primitives.utils import DummyAction, DummyContext
+
+@task(name="Trace Slits 1D")
+def trace_slits_task(data):
+    """Task to trace slits in 1D data."""
+    args = Arguments()
+    args["flat_data"] = data
+    action = DummyAction(args=args)
+    context = DummyContext()
+    result = TraceSlits1D(action, context)._perform(args, config={})
+    return result["slit_positions"]