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 |
|---|---|---|---|
| 2026-02-05 | jwst_1477.pmap | latest | Affected modes- NIRISS, WFSS mode, photom reference file. The WFSS photometric calibration for the science orders- order 1 for all filters and order 2 for F090W- has been revised based on analysis of the photometric calibration observations from commissioning through cycle 4. This is the first change in the WFSS photometry for the science orders since commissioning. Also, delivering a new NIRCam photom rmap with a catch-all case added, pointing to N/A, to avoid CRDS log errors for photom reference files. |
| 2026-01-12 | jwst_1475.pmap | archived | Affected data: NIRCam data taken using P subarrays on the A4 and A5 detectors after 1 Dec 2025, dark, superbias, and readnoise reference files. NIRSpec, all data, jump step parameter reference file. These dummy dark current, superbias, and readnoise reference files are intended for the updated point source subarrays, SUB64P, SUB160P, and SUB400P on the A4 and A5 detectors. These subarrays have recently moved. The old subarrays on the A3 detector were moved to A4, and the subarrays on the A5 detector changed location. These reference files contain values of zero for all pixels, cutouts from the current full frame superbias reference files, and cutouts from the current full frame readnoise reference files, respectively, and are intended to support pipeline processing of the initial observations using the new subarrays. This NIRSpec jump step parameter reference file was delivered to increase the flagging radius for snowball halos, expand_factor from 2 to 3. Previously the snowball flagging of some large snowballs left a low level residual halo outside of the flagged snowball radius. Additionally, updates to the pipeline snowball detection code coming in next JWST pipeline build, 12.3, will flag a slightly smaller footprint for snowballs. This delivery, therefore, increases the flagging radius to better flag the snowball residuals that were previously seen and account for the upcoming code changes. |
| 2025-12-22 | jwst_1471.pmap | archived | Affected modes - NIRCam, WFSS and TSGRISM modes, specwcs and wavelengthrange reference files. These updated specwcs reference files improve the trace and wavelength calibration of NIRCam WFSS and Grism Time Series data. The calibrations were derived from data taken in cycles 1, 2, and 3. Trace geometry is estimated to be better than 0.1 pixel, Wavelength calibration is expected to be better than 2A. The absolute flux calibration RMS is 3 percent for all combinations of Modules and Grisms. This updated wavelengthrange file updates the spectral orders that will be extracted for a given filter. With this update, first order will be extracted for all filters. Second order will only be extracted for F322W2 and bluer filters. This update is being made in concert with the updated specwcs reference files that were recently delivered and update the trace and wavelength calibration for WFSS data. Delivering a new pmap that includes an updated NIRCam imap, which activated the previously delivered specwcs reference mapping jwst_nircam_specwcs_0025.rmap. The new specwcs reference files within this rmap were delivered prematurely, and could not be activated until an updated wavelengthrange reference file, jwst_nircam_wavelengthrange_0005.asdf, was delivered. With this update, the new specwcs and wavelengthrange reference files will be active within the same context. |
| 2025-12-12 | jwst_1468.pmap | archived | Affected data: NIRSpec FS, IFU, and MOS data taken in the full frame readout mode when reprocessing data using the new, optional picture frame step which is turned on by setting skip equal to False. This delivery contains an initial set of NIRSpec picture frame reference files for use with the new optional picture frame correction step that will be added in the next pipeline build 12.3. The new pipeline step removes thermal picture frame artifacts by scaling and subtracting the reference rate images stored in the delivered reference files from science ramps or rate images. The new pipeline step and these reference files will not initially be applied by default pipeline processing, but can be used in custom reprocessing. |