Defines (or redefines) and/or displays the grouping and quality flags, the important keywords, and the fractional systematic errors.
Compresses a FITS PHA file to a user-defined number of channels. The output is a new file containing the revised PHA extension plus a direct copy of any other extensions in the original file.
Compresses a FITS RMF file (the detector response matrix) in channel space to give a user-defined number of resulting channels.
Changes the value of a keyword in a FITS extension header.
Performs arithmetical operations on PHA files.
Adds together ARFs.
Adds together RMFs.
Multiplies an RMF file by an ARF file.