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Space Telescope Imaging Spectrograph
Pipeline Software History (intro)

STIS PIPELINE SOFTWARE HISTORY

CALSTIS is the name of the software task that performs routine calibration of STIS data in the STScI "data pipeline." The version of CALSTIS used to calibrate a set of data can be found in the CAL_VER primary header keyword of the calibrated data files. The major changes made in each version of calstis are provided in the Pipeline Software History.

CALSTIS also exists as a task in the STSDAS package (hst_calib.stis) and can be run by the observer to customize the calibration process. The major elements of CALSTIS are:

CALSTIS all processing steps
BASIC2D bias and dark subtraction, flat-fielding
OCRREJECT cosmic-ray rejection
WAVECAL WAVECAL processing
X2D 2-D spectral rectification
X1D 1-D spectral extraction