PDS_VERSION_ID        = PDS3
RECORD_TYPE           = "STREAM"
OBJECT                = TEXT
  PUBLICATION_DATE    = 2013-04-30
  NOTE                = "Description of the CALIB directory"
END_OBJECT            = TEXT
END

Description of the CALIB directory at PSA level 2 and 3


4.1	Introduction
The CALIB directory contains 4 calibration files available in the PDS3
format:
-	The resolution calibration file
-	The AOTF frequency to wavenumber calibration file
-	The AOTF transfer function calibration file
-	The Blaze function calibration file.
Each file is accompanied with a CAT file, in the PDS3 format.

4.2	Resolution calibration file
The resolution calibration data are given in the RESOL_BINNINGXX.TAB 
files. 
The different binning XX possibilities are listed in Table 1. 
This file is made of (bins+1) columns, where bins corresponds to the 
value listed in the second columnof Table 1. 

Binning case	Number of lines per bin	Number of binning groups
8 x 3	3	8
8 x 4	4	8
2 x 12	12	2
2 x 16	16	2
Table 1: List of the binning possibilities

4.3	The AOTF frequency to wavenumber calibration file

The AOTF frequency to wavenumber calibrations are given in the 
AOTF_F_WN.TAB with its associated LBL file. This file is made of 6 
columns, the first one giving the relation type (AOTF frequency to 
wavenumber F->WN  or wavenumber to AOTF frequency WN->F). The 
relations are defined in Section 2.3. The second column gives
the binning case and the third one the bin number. Table 1 summarizes
the detector lines that are summed up for each case and Table 1 gives
the different binning cases. The three last columns give the values of
the second order polynomial coefficients. There is one calibration 
file for the nominal mission, and for each extension of the mission.

4.4	The AOTF transfer function calibration file

The AOTF transfer function values are given in the 
AOTF_TF_BINNINGXX.TAB with its associated LBL file. As for the 
resolution, there is a file for each binning case, which are listed in
Table 1. The first column gives the diffraction order number, followed
by the centered wavenumber values (between -100 and 100 cm-1 around 
the maximum, by steps of 0.1cm-1, 2001 in total), the transfer 
function values for bin 1 (2001 in total) and the transfer function 
values for bin 2 (2001 in total). There is one line per order (94 in 
total).

4.5	The blaze function calibration file

The blaze function values are given in the BLAZE.TAB with its 
associated LBL file. The first column gives the diffraction order 
number, followed by the centered wavenumber values (between -100 and 
100 cm-1 around the center of the order, by steps of 0.1cm-1, 2001 in
total) and the blaze function values (2001 in total), same for bins 1 
and 2.
There is one line per order (94 in total).