Cosmic Background Explorer/FIRAS

Product Name
Glitch Rate Correction Parameters


This file contains the glitchrate correction slopes and intercepts for the FIRAS data. These corrections were computed for each channel and scan mode by a linear lease squares fit to the average variance and glitch rate of each calibrated sky spectrum. The average variance for a spectrum is defined to be: ((Nifgs * Real_Var) / D-Vector^2) / Nfreq. These corrections are used in the following manner: Nifgs' = Nifgs / (Intercept + Slope * Glitchrate).

The spectra used in these computations were calibrated with the F16_93HYBRID calibration model solutions. For each row above, entries are in the order short slow, short fast, and long fast.

  0.3181130953125  0.2140692412586  0.0966526586767  !  RH slopes
  1.4352805363822  0.8577051984544  0.5659091990933  !  RL slopes
  1.5191090347109  0.7266698341443  0.2082700179341  !  LH slopes
  0.9033791223006  1.1911192067644  0.7500055772031  !  LL slopes

  0.8077706519285  0.8747664977663  0.9388613541838  !  RH intercepts
  0.4982031329753  0.7114551425149  0.8027039679998  !  RL intercepts
  0.8917235659124  0.9526830996467  0.9840390263056  !  LH intercepts
  0.6036605718068  0.6089863134529  0.6825380479394  !  LL intercepts

Back to Product Page

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason