SMART Calibration File Naming Convention

SMART Calibration File Naming Convention

SMART uses a variety of calibration files. Their names follow a standard convention described here Calibration file names are split into 5 parts :

instrument_module_filetype_version . extension

Where :

1. instrument : irs


2. module designator. One of :

   sl	short low
   ll	long low
   sh	short high
   ll	long low
   pub	peak up blue
   pur	peak up red

3. file-type : For example wavesamp, ordfind, linetilt, etc.


4. version:
   sxx-x : Version number of the corresponding SSC pipeline.
   Eg. Pipeline version 9.5 would be designated "s09-5".
   NOTE :
   1. These are not the same type of file as "Special version" files designated "s". See explanation below.

5. extension - one of .fits (FITS file) or .tbl (table/ASCII text file).

Other Designators for Calibration Files

Pixel Mask Convention

In the pixel mask files each pixel is represented by a 16 bit integer. The value of this integer designates the condition of the pixel thus :

• 2^0 = 0 = Normal pixel
• 2^9 = 512 = Warm pixel
• 2^14 = 16,384 = Dead pixel
• 2^15 = 32,768 = NCU (not currently used)

SSC Conventions

Calibration files are supplied to the SMART group from SSC. These are shipped with their SSC designated names and re-named to SMART conventions. The conversions are :

IPAC files (wavsamp etc.) - IRS modules are designated by SSC as b0, b1, b2 and b3. The SMART convention is to use letters - SL, SH, LL and LH. The correspondence is :

• b0 = SL
• b1 = SH
• b2 = LL
• b3 = LH

SSC Name	SMART Name	Wavelength Range (microns)	Orders
b0	SL	5.3 - 14.2	1 - 3
b1	SH	10.0 - 19.5	11 - 20
b2	LL	14.2 - 40.0	1 - 3
b3	LH	19.3 - 37.0	11 - 20

SMART file name translation

Translation between SSC (and other) pre-existing calibration file names and the corresponding SMART file names is listed at Calibration Files