Calibration

In order to perform detailed analysis on an x-ray field, a user will need to access the various calibration files, apply corrections for vignetting and propagate errors.

• Vignetting correction
  • *makevig, vigdata* -- Apply Vignetting Correction to an image
• Exposure Map
• Background Corrections
  • *imcalc* -- Obtain a background subtracted image for ROSAT PSPC Data
  • Radial profile of an extended source for Einstein IPC data.
• *errcreate* -- Use of error arrays
  • Determine a background subtracted radial profile
• To Resample Calibration Images