Version 3.53.1

This release includes chandra_models PRs #127, #128, and #129. None of these updates modify model performance.

• PR #127 updates the PLINE03T and PLINE04T caution high limits to match those listed in the TDB, and adds the TDB caution low limits.
• PR #128 updates several OBA limits to match the latest guideline and G_LIMMON updates.
• PR #129 updates the HRC CEA planning limit to 10C, consistent with the currently approved guideline.

Files Modified:

• chandra_models/xija/pline/pline03t_model_spec.json: Limit updates only
• chandra_models/xija/pline/pline04t_model_spec.json: Limit updates only
• chandra_models/xija/fwdblkhd/4rt700t_spec.json: Limit updates only
• chandra_models/xija/hrc/cea_spec.json: Limit updates only
• chandra_models/__init__.py: version increment to 3.53.1

Files Added: None

Files Removed: None

Version 3.53

This release includes chandra_models PRs #124, #125, and #126.

PR #124 adds a new model for 1DPAMYT and increments the release version number. This model will be used to monitor this location and will be available should the 1DPAMZT thermistor fail, but will not be a limiting factor in planning at this time.

PR #125 removes an old version of the MUPS2A model spec file, pm2thv1t_spec.json, which is no longer used. This model was replaced by pm2thv1t_spec_matlab.json in a past release.

PR #126 adds new science data quality limits for the ACIS FP that conform to the updated guidance. The original limits will be kept for now, but may be removed in a future update after the FOT Matlab Tools are updated to use the new values.

Files Modified:

• chandra_models/xija/acisfp/acisfp_spec.json: Limit updates only
• chandra_models/__init__.py: version increment from 3.52.1 to 3.53

Files Added:

• chandra_models/xija/dpamyt/dpamyt_spec_spec.json

Files Removed:

• chandra_models/xija/mups_valve/pm2thv1t_spec.json

Version 3.52.1

Description

This release includes chandra_models PRs #122 and #123. PR #122 updates the MUPS model specification files with updated limits and increments the release version number. PR #123 updates the limits in the OBA model specification file. No model performance parameters were modified.

Files Modified:

• chandra_models/xija/fwdblkhd/4rt700t_spec.json: Limit updates only
• chandra_models/xija/mups_valve/pm1thv2t_spec.json: Limit updates only
• chandra_models/xija/mups_valve/pm2thv1t_spec_matlab.json: Limit updates only
• chandra_models/init.py: version increment from 3.52 to 3.52.1

Files Added: None

Files Removed: None

Version 3.52

This release includes PR #121, which updates the HRC CEA model with a new set of refit parameters.

Files Modified:
 - chandra_models/xija/hrc/cea_spec.json: 
 - chandra_models/init.py: Increment version from 3.51.1 to 3.52

Files Added: None

Files Removed: None

Version 3.51.1

This release includes PR #120, which adjusts the ACA planning limit from -4.5C to -3.9C and removes an unused version of the ACIS FP model spec file.

Files Modified:

• chandra_models/xija/aca/aca_spec.json: Planning limit adjusted from -4.5C to -3.9C
• chandra_models/init.py: Increment version from 3.51 to 3.51.1

Files Added:

• None

Files Removed:

• chandra_models/xija/acisfp/acisfp_spec_matlab.json: No longer used

Version 3.51

This release includes PR #119, a refit of the ACIS FP thermal model. This model has become inaccurate in the pitch range of ~100-120 degrees, affecting the maximum temperature reached during science observations at these pitch angles, resulting in the breaking of the data quality thermal limits. A new pitch bin at 110 degrees was added, and a general refit of parameters was performed.

Files Modified:

• chandra_models/xija/acisfp/acisfp_spec.json: re-fit of all parameters, adding new pitch bins
• chandra_models/xija/acisfp/acisfp_spec_matlab.json: exact copy of acisfp_spec.json
• chandra_models/init.py: increment version from 3.50.1 to 3.51.0

Files Added:

• None

Files Removed:

• None

Version 3.50.1

This release includes PRs #113 and #118, which updates the ACA model spec to remove the penalty limit (PR #113) and increments the version to 3.50.1 (PR #118). No changes were made that affect model accuracy or thermal predictions.

Files Modified:

• chandra_models/xija/aca/aca_spec.json: Remove penalty limit
• chandra_models/__init__.py: Increment version

Files Added:

• None

Files Removed:

• None

Version 3.50

This release includes PRs #115 and #117, which updates the PLINE03T and PLINE04T models, as well as PR #116 which introduces a new characteristics file to help define appropriate ACIS FP temperature limits.

Files Modified:

• chandra_models/xija/pline/pline03t_model_spec.json: Model Refit
• chandra_models/xija/pline/pline04t_model_spec.json: Model Refit
• chandra_models/__init__.py: Version increment from 3.49.1 to 3.50
• .gitignore: added .idea and .vscode files to ignore list

Files Added:

• chandra_models/acis/characteristics.yml: characteristics file to help define appropriate ACIS FP temperature limits

Files Removed:

• None

Version 3.49.1

This release includes PR #114, which adds a -105.0C ACIS FP limit and decreases the CEA planning limit from 10C to 9.5C.

Files Modified:

• chandra_models/xija/acisfp_spec.json: Add -105.0C hot ACIS "b" limit
• chandra_models/xija/acisfp_spec_matlab.json: Add -105.0C hot ACIS "b" limit
• chandra_models/xija/cea/cea_spec.json: decrease planning limit from 10.0C to 9.5C
• chandra_models/init.py: increment version from 3.49 to 3.49.1

Files Added:

• None

Files Removed:

• None

Version 3.49

This release includes the following PRs:

• PR #106: This adds the new acquisition probability model that was developed in sot/aca_stats#16.
• PR #108: This updates the penalty limit to -4.0, above the current planning limit, effectively disabling the penalty limit
• PR #109: This is a small change to the readme.
• PR #110: This PR updates the ACIS FP and 1DEAMZT models.
• PR #111: This updates the file modes for several files, there is no impact to any model parameters with this PR (pmtank3t_spec_linear.json, calc_settling_temp.py, pftank2t_spec.json, pftank2t_spec_with_cossrbx.json)
• PR #112: This updates the pitch / roll constraint file to match the values presented during the June 1 2023 MPCWG, duplicate pitch values were given a very small offset of 3e-16 for compatibility with SOT tools and clarity

Files Modified:

• chandra_models/xija/dea_spec.json: re-fit of all parameters, adding bad times
• chandra_models/xija/acisfp_spec.json: re-fit of all parameters, adding bad times
• chandra_models/xija/acisfp_spec_matlab.json: exact copy of acisfp_spec.json
• chandra_models/xija/aca/aca_spec.json: update / disable penalty limit
• chandra_models/xija/minusyz/pmtank3t_spec_linear.json: file mode change
• chandra_models/xija/pftank2t/calc_settling_temp.py: file mode change
• chandra_models/xija/pftank2t/pftank2t_spec.json: file mode change
• chandra_models/xija/pftank2t/pftank2t_spec_with_cossrbx.json: file mode change
• chandra_models/pitch_roll/pitch_roll_constraint.csv: updated values
• chandra_models/__init__.py: increment version from 3.48 to 3.49
• README.md: small change in wording

Files Added:

• chandra_models/aca_acq_prob/grid-local-quadratic-2023-05.fits.gz: new acquisition probability model data

Files Removed:

• None