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 |
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2025-01-31 | jwst_1326.pmap | latest | Affected data - NIRCam, non-TSO imaging mode data, pars-image2pipeline reference files. MIRI, MRS data, regions reference files. This updated parameter reference file for the image2 pipeline skips the background subtraction step for all NIRCam non-TSO imaging mode data. Delivering a new MIRI psf rmap that includes a catch-all N/A entry for exposures that do not fall under the existing coverage, that will prevent the CRDS errors previously seen for this reference type in the output of the processing logs. This delivery updates MIRI MRS regions reference files to change the handling of out-of-bounds wavelengths on illuminated slices. A new FGS readnoise rmap is being delivered to cover additional FGS read patterns that were not listed in the original rmap. For more details regarding individual deliveries, please see the Context History section and select all contexts on the CRDS homepage. |
2025-01-29 | jwst_1322.pmap | archived | New system_calver file for jwst software version 1.17.1, which corresponds to DMS Build 11.2. This file contains the new pinned context for Build 11.2, jwst_1322.pmap, to be used for processing and reprocessing of all JWST data upon installation of jwst version 1.17.1 into operations. |
2024-12-20 | jwst_1321.pmap | archived | Affected data - NIRCam, all modes, sirskernel reference file. This is the initial reference file of fourier coefficients for the SIRS method of reference pixel correction in NIRCam. Testing has found this new reference pixel correction method can give better results compared to the current standard reference pixel correction method. As the reference pixel correction step is performed on all NIRCam exposures where reference pixels are present, this update potentially affects all full frame and some subarray exposures for all modes. Delivering the first NIRCam sirskernel rmap to initialize this new reference type and prepare for subsequent sirskernel reference file deliveries. New system_calver file for jwst software version 1.17.0, which corresponds to DMS Build 11.2. This file contains the new pinned context for Build 11.2, jwst_1321.pmap, to be used for processing and reprocessing of all JWST data upon installation of jwst version 1.17.0 into operations. |
2024-12-20 | jwst_1318.pmap | archived | Affected data - MIRI, future LRS modes, psf reference file. We present a super-sampled empirical point spread function, ePSF, for the LRS slit, based on observations of a standard star from Commissioning and in Cycles 1 and 3. The reference file included a PSF for each row of the detector exposed to LRS slit data, rectified, normalized, and super-sampled. The CENTCOL and SUBPIX keywords in the FITS header give the central column of all PSFs and the number of subpixels per actual detector pixel. A second extension provides a wavelength map for the PSF image. The observations were obtained by scanning the standard star in 11 steps of 0.1 pixels each, 11 mas, across the two nod positions and the center of the slit. These data were reduced with pipeline version 1.16 and CRDS context jwst_1298.pmap with a customized saturation reference file set to half the nominal value to minimize the brighter-fatter effect, at wavelengths below 6.2 um. The nine scans, with three positions and three cycles, were combined to produce one PSF image. This reference file is not presently used by the pipeline but may be in the future. Delivering the first MIRI psf rmap to initialize this new reference type and prepare for subsequent psf reference file deliveries. |