This is the CRDS Context currently in use by the pipeline calibration software.
Each cal version is associated - and guaranteed to work with - a specific build context. For JWST users, the default context is determined based on the version of JWST software you have installed, unless you explicitly override this by setting the "CRDS_CONTEXT" environment variable to a specific context or virtual context, e.g. "jwst-latest".| Start Date | Context | Status | Description |
|---|---|---|---|
| 2025-07-09 | jwst_1408.pmap | latest | Affected data - MIRI, imaging SUB256 modes, emicorr reference file. While testing the pipeline build 12.0, an unexpected pattern was found in the SUB256 subarray file due to the new default joint algorithm used in the emicorr step. Investigation showed that this array size had its read timing too close to the emi phase correction to be able to correct properly. The solution is to skip the emicorr correction for SUB256. The reference file was updated to skip the 10 Hz correction for FAST mode SUB256 data. No data will need to be reprocessed with this update MIRI imaging EMICORR reference file, as no data in MAST exists with this version of the correction. New system_calver file for jwst software version 1.19.0, which corresponds to DMS Build 12.0. This file contains the new pinned context for Build 12.0, jwst_1408.pmap, to be used for processing and reprocessing of all JWST data upon installation of jwst version 1.19.0 into operations. |
| 2025-06-28 | jwst_1406.pmap | archived | Affected data - MIRI, imaging, MRS, and future WFSS modes, dark, psf, and specwcs reference files. NIRCam, WFSS, full frame, and DHS modes, bkg, dark, specwcs, and wavelengthrange reference files. NIRISS, SOSS modes, bkg, pars-spec2pipeline, and wavelengthrange reference files. NIRSpec, BOTS, MOS, IFU and FS modes obtained in FULL frame traditional readout, pars-refpixstep reference file. Several mappings and reference files were delivered to support JWST DMS Build 12.0 and jwst pipeline version 1.19.0. Please refer to Context History - all contexts on the CRDS homepage for full delivery descriptions of contexts jwst_1387.pmap through jwst_1406.pmap. |
| 2025-06-26 | jwst_1386.pmap | archived | Affected data: MIRI, MRS, bad pixel reference files. This delivery is of new MIRI MRS bad pixel reference files for Spring 2025. We changed to 3 month cadence of updates in 2025. Any MRS data taken after May 5, 2025 should be reprocessed to use these new masks. Shallow observations, defined as FASTR1 data with NGROUPS less than 50, use the least aggressive bad and warm pixel masking, medium-depth observations, defined as FASTR1 data with NGROUPS greater than or equal to 50, use a slightly more aggressive flagging, and deep observations, defined as all SLOWR1 data, use the most aggressive flagging thresholds. This hybrid scheme is designed to help flag known bad pixels at the level actually required by different science cases. Each of the new bad pixel masks is based upon a thresholding analysis of multiple deep MRS background sky observations. |
| 2025-06-20 | jwst_1385.pmap | archived | Affected Data: NIRSpec, all MOS observing modes, new MOS pathloss reference file. This is the first data-based MOS pathloss reference file, while the current version in CRDS is still a model version. NIRISS, all modes, mask, superbias and dark reference files. This delivery includes reference files covering 9 epochs from the end of commissioning through most of cycle 3. NIRSpec, MOS data using GRATING PRISM G395H G395M G235H G235M and G140H or G140M with F100LP, s-flat reference files. This delivery updates the NIRSpec MOS S-flats for all grating filter combinations except G140M F070LP and G140H F070LP to include a correction for field-dependent variations in the flux calibration. NIRISS, AMI mode data, pars-chargemigrationstep reference files. These files contain updated charge migration signal threshold values for four AMI filters, F480M, F430M, F380M, F277W. NIRSpec, BOTS, MOS, IFU and FS data in FULL frame readout, new version of 14 superbiases and 14 darks with an updated format of the PGRATIN header keyword to match expected datamodel specifications. For more details regarding individual deliveries, please see the Context History section and select all contexts on the CRDS homepage. |