Calstis2: Cosmic Ray Rejection in the STIS Calibration Pipeline

Details Calstis2: Cosmic Ray Rejection in the STIS Calibration Pipeline Calstis2: Cosmic Ray Rejection in the STIS Calibration Pipeline

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998stis.rept...11s&link_type=abstract

Instrument Science Report STIS 98-11, 12 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Stis, Space Telescope Imaging Spectrograph

Scientific paper

We describe calstis2, the calstis calibration module which combines CRSPLIT and repeated exposures to produce a single, cosmic ray rejected image. Cosmic ray rejection in the STIS pipeline employs a noise model and parameterized rejection criteria to identify and exclude discrepant values in forming the output image. The calstis pipeline is able to perform this cosmic ray rejection because the individually commanded exposures are associated together into a single dataset by TRANS and generic conversion. The functionality of calstis2 is also available as a host-level application and as a task in STSDAS to allow users to re-perform the cosmic ray rejection outside the pipeline with different input parameters.

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