The Calibration and Supplemental Search Interface (CaSSI) provides access to uncommonly accessed and restricted JWST and Roman mission product categories. The products include pre-launch test data, telemetry and, for Roman, calibration reference products. CaSSI also offers an API for search and data retrieval.

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Table of Contents


    Search This Guide

    Some of the CaSSI functionality has not yet been implemented, and not all intended data products are available. This guide will display pages that correspond to deployed interfaces, but may refer to features that are not yet available. 


    Data Category Selection

    The product search interfaces are segregated by mission and data group. Select the mission in the Web interface with the pull-down menu, as shown at right. 


    Limitations

    Be aware that the CaSSI web interfaces will return no more than 5000 results. If the reported number of matches in the results table is exactly 5000 it likely means that not all matching archived products are displayed. Repeat the search with more restrictive search criteria to keep the results to within the limit. An alternative is to retrieve a curl script via the Show API Query button, remove the limit from the script, and  execute the search from the command line. 

    Some data groups, such as supplemental JWST data, include millions of files. If you execute an API search with increased or missing limits, the search may return very large numbers of results. Such searches may take many minutes to execute, or may time out on the server. It is best to start with highly restrictive search criteria, or to first perform a count of the number of results, before performing an extensive or unconstrained query.

    Authorization

    All except the calibration product categories available in CaSSI require per-user authorization. Please login to CaSSI to retrieve data. If you need, but do not have, authorization contact the MAST Archive Support to request it, mention the mission for which you need authorization, and describe the functional reason for the request. 

    User Support

    For MAST user support, contact the HelpDesk: archive@stsci.edu. See the Archive Support page for details and other resources.

    Supporting Resources

    Data Use | Acknowledgements | DOI | Privacy

    Send comments & corrections on this MAST document to: archive@stsci.edu