FTOOLS manipulation tasks

GRPPHA

Defines (or redefines) and/or displays the grouping and quality flags, the important keywords, and the fractional systematic errors.

RBNPHA

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.

RBNRMF

Compresses a FITS RMF file (the detector response matrix) in channel space to give a user-defined number of resulting channels.

FPARKEY

Changes the value of a keyword in a FITS extension header.

MATHPHA

Performs arithmetical operations on PHA files.

ADDARF

Adds together ARFs.

ADDRMF

Adds together RMFs.

MARFRMF

Multiplies an RMF file by an ARF file.