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|
|X2D||2-D spectral rectification|
|X1D||1-D spectral extraction|