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HEAsoft manipulation tasks

fthedit Changes the value of a keyword in a FITS extension header
ftgrouppha Defines (or redefines) and/or displays the grouping and quality flags, the important keywords, and the fractional systematic errors.
ftrbnpha 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.
mathpha Performs arithmetical operations on PHA files.
ftcmppha Convert a type II pha file to a type I pha file.
ftrbnrmf Bins a FITS RMF file (the detector response matrix) in channel or energy space.
ftcmprmf Compress an RMF by removing all response below a threshold value.
ftaddarf Adds together ARFs.
ftaddrmf Adds together RMFs.
ftmarfrmf Multiplies an RMF file by an ARF file.
ftgenrsp A generic spectral response generator.
ftsvdcmprmf Builds an SVD compression of an OGIP RMF, stored as a side-car file.
ftflx2tab Converts an input text file of model spectra into an XSPEC table model file.
ftgetmodeldata Downloads spectral model data file(s) used by certain models.
fv A general GUI for manipulating FITS files.