Appendix F : Contributed additional software

• IDL vanilla interface

  • xasread and xaswrite, a small group of IDL procedures to
    • read XAS files (data and keywords into an IDL structure
    • rewrite the IDL data structure into an existing XAS file
    • update a XAS file header
  • xasasc a csh script which adds an header to an ASCII tabular file, and an IDL procedure to read it into an IDL structure

• IDL xasplot widget GUI

  This plotting environment has been developed at ITESRE and the relevant documentation (if any) will be mantained there.

• LECS support

  using normal XAS commands and described separately

• Additional HPGSPC support

  using normal or extended XAS commands and described separately

• Image reduction

  • centroid image barycentre
  • psf PSF and LSF computation
  • smooth_square, smooth_gauss and smooth_gauss2 image smoothing programs
  • a suite of programs to handle celestial coordinates

• Spectral analysis

  • insertboundary inserts keV channel boundaries in a spectrum
  • scount cursor-aided integration of a spectrum
  • integra integration of analytic spectral form
  • soperate algebra on spectral files
  • gausspeak fitting of Gaussian lines
  • convolve, fit and grid, a set of spectral convolution and fitting programs
  • plotdata, plotfit , plotres, overfit and overres, shortcut commands to plot the results of the above fits with the usual XAS graphics

• Timing analysis

  • tscramble scramble order of bins in a time profile
  • tappend appends time profiles one after the other
  • trebin time profile rebinning
  • varies mean and variance of time profile
  • dtaccum and dtaccum produce a time profile or a statistics of SAX packet header time information
  • a suite of programs to handle periodic and aperiodic variability

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