JWST Data Calibration Reference Files

The JWST science calibration pipeline automatically processes data for all available observing modes, and provides science-ready calibrated data for these modes. Details of the calibration pipeline architecture and algorithms can be found here.

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See also: JWST Data Calibration Considerations, JWST Science Calibration Pipeline Overview

Each stage of the calibration pipeline uses a set of instrument-specific reference files that ensure the calibration pipeline meets its accuracy requirements. The reference files are instrument-specific, and are periodically updated as the data process evolves and the understanding of the instruments improves. Calibration reference files are stored in the Calibration Reference Data System (CRDS).

Reference file types

The full list of Reference File Types provides the most current information on all the individual reference files used by the JWST instruments in the pipeline steps part of the calibration pipeline stages. The table includes links to more details about header keywords, format, and the instruments for which the reference files are used.

Calibration Reference Data System

Calibration reference files are stored and managed the Calibration Reference Data System (CRDS). CRDS is directly integrated with calibration steps and pipeline stages via reference file mappings that are set by default to always access the best reference files for the data, according to certain selection rules (for example, instrument and filter used for an observation). The calibration pipeline pages provide more information about CRDS.

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