linearize (version 1.4)

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This routine runs the ascalin FTOOL on all the unfiltered event files. This does several things. PI values are calculated from PHA (energy) values. For the SIS this means normalizing the four chips to a common scale. For the GIS, corrections are made for the temperature dependence of the gain. To do this ascalin uses a gain history file which is created by the ISAS program temp2gain.

For the GIS, raw X and Y coordinates of events are converted to a linear detector X and Y scale. For both instruments, the detector coordinates are converted to R.A. and Dec. coordinates registered about a common aspect point.

FTOOLS called:

  1. ascalin
  2. fmemsort
Utilities called:
  1. add_fits_keyword
  2. check_order
  3. exception
  4. fetch_file
  5. file_to_log
  6. ftool_test
  7. generate_filename
  8. log_entry
  9. milestone
  10. parse_filename
  11. read_parfile
  12. setup_parfile