Version 3.56

This release includes PR #134, which adds a new ACA acquisition probability model that will become the new default flight model. This new model is based on flight data plus recent data from the ACA software test set and 2022 data from the ASVT PEA test set.

This model file was created and validated with:

• https://github.com/sot/aca_stats/blob/5ee69ee908cee4f91debad701f2d21b36bcaef2f/fit_acq_model-2024-09-local-quadratic.ipynb
• https://github.com/sot/aca_stats/blob/5ee69ee908cee4f91debad701f2d21b36bcaef2f/compare-acq-model-to-flight-data.ipynb

Files Modified:

• chandra_models/__init__.py: version increment to 3.56

Files Added:

• chandra_models/aca_acq_prob/grid-local-quadratic-2024-09.fits.gz

Files Removed:

• None