Draft: Add Phase-Resolved Analysis Tutorial and Tools.#497
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Description
Resolves #395 and #413
This draft PR introduces a complete tutorial and a set of supporting Python tools for performing phase-resolved pulsar analysis within the
cosipyframework.Currently, the workflow demonstrates how to process Data Challenge 2 (DC2) FITS data for the Crab pulsar and its corresponding albedo background. The end goal of this pipeline is to prepare isolated on-pulse and off-pulse FITS files that are ready for downstream COSI Spectral Fitting.
Key Additions
example_notebook.ipynb): A step-by-step Jupyter Notebook guiding users through combining unbinned data, slicing by Mission Elapsed Time (MET), assigning phases, plotting the pulse profile, and selecting phase intervals.phase_assigner.py: A new module that reads a pulsar ephemeris file (e.g.,crab.par) and calculates/appends the exact rotational phase to individual photon events in a FITS file.plot_pulse_profile.py: A plotting utility to generate and visualize the folded light curve/pulse profile from the phase-assigned data.phase_selector.py: A filtering tool to extract specific phase windows (e.g., on-pulse and off-pulse regions) and save them as new FITS files.