In this epic, we implemented several improvements in the task that measures and fits the Photon Transfer Curve (PTC). Some of them were driven by conversion to gen3 (e.g.,
DM-21786 and tickets therein; DM-26725), while others, by testing the code with data from the Bench for Optical Testing at SLAC and performing direct comparisons to the SLAC PTC code (e.g., DM-27185, DM-26697). Many of these comparisons were led by C. Lage from UC Davis, with whom we closely collaborated to identify areas of improvement. We also routinely worked with our Rubin Camera Subsystem and DESC colleagues within the context of the Camera and Verification Testing and LSST DESC Sensor Anomalies Working Group weekly meetings.