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IRAC Pipeline Data Products and Filenaming Convention

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IRAC BCD Products (06/04/04):

File Type Name Example
SPITZER_I+channel*_aorkey_expid_ dcenum_version_type.suffix
Format Description
Raw data SPITZER_I1_0009876540_0096_0000_01_dce.fits Output FITS image with 16-bit unsigned integer, 256x256 Raw data
BCD image SPITZER_I1_9876540_96_0_1_bcd.fits Output FITS image with 32-bit float, 256x256 BCD-processed, flux-calibrated final product (MJy/Str)
Log file SPITZER_I1_9876540_96_0_1_bcd.log ASCII file BCD-processing log
Error image SPITZER_I1_9876540_96_0_1_bunc.fits Output FITS images with 32-bit float, 256x256 Error image associated with the BCD image
Mask file SPITZER_I1_9876540_96_0_1_bdmsk.fits Output FITS images with 16-bit integer, 256x256 Bit-mask associated with BCD image for during BCD processing, e.g. wraparound correction (see bit definition)
Mask file SPITZER_I1_9876540_96_0_1_brmsk.fits Output FITS images with 16-bit integer, 256x256 Bit-mask associated with outlier detections in the BCD image (see bit definition)
Log file SPITZER_I1_9876540_96_0_1_ptn.log ASCII file BCD-processing log

* I1, I2, I3, I4 correspond to 3.6, 4.5, 5.8, 8.0 microns

IRAC Post-BCD Products (05/10/04):

File Type Name Example
SPITZER_I+channel_aorkey_dcenum _version_Enum*_type.suffix
Format Description
Mosaic files 1a. SPITZER_I1_9876540_0_1_E012345_msaic.fits (S11 and earlier)
1b. SPITZER_I1_9876540_0_1_E012345_maic.fits (S12 and later)
2a. SPITZER_I1_9876540_0_1_A012345_msunc.fits (S11 and earlier)
2b. SPITZER_I1_9876540_0_1_A012345_munc.fits (S12 and later)
3a. SPITZER_I1_9876540_0_1_A012345_mscov.fits (S11 and earlier)
3b. SPITZER_I1_9876540_0_1_A012345_mcov.fits (S12 and later)

When HDR mode is used with an exposure time of 12s/30s, the following additional products from the 0.6s(short)/1.2s(short) exposure times will be created:

4. SPITZER_I1_9876540_0_1_A012345_maics.fits
5. SPITZER_I1_9876540_0_1_A012345_muncs.fits
6. SPITZER_I1_9876540_0_1_A012345_mcovs.fits

When HDR mode is used with an exposure time of 100s/200s, the following additional products from the 0.6s(short),12s(medium)/0.6s(short),12s(medium) exposure times will be created:

7. SPITZER_I1_9876540_0_1_A012345_maicm.fits
8. SPITZER_I1_9876540_0_1_A012345_muncm.fits
9. SPITZER_I1_9876540_0_1_A012345_mcovm.fits

1-9. Output FITS images with 32-bit float 1,4,7. Mosaic image
2,5,8. Mosaic uncertainty image
3,6,9. Coverage map
Pointing Refinement files 1. SPITZER_I1_9876540_0_1_E012345_reptg.tbl
2. SPITZER_I1_9876540_0_1_A012345_irsa.tbl
3. SPITZER_I1_9876540_0_1_A012345_mosnl.nl
ASCII files 1. Table of corrected RA, DEC, CD matrix keywords and their uncertainties
Absolute pointing corrections are produced using channel 1 & 2 only and applied to all 4 channels
2. List of 2mass point sources located in the mosaic and used for absolute pointing refinement
3. Parameter file for mosaic/source extraction pipeline

* The letter "E" stands for "ensemble" product and "A" for "ancillary" product. In the case of an ensemble product, "dcenum" refers to the first dce that was used in the ensemble creation, "version" refers to the version of that first dce, and "Enum" is the ensemble number.

IRAC Calibration Products (05/10/04):

File Type Name Example
SPITZER_I+channel_productid*_ dcenum_version_Cnum**_type.suffix
Format Description
Dark file SPITZER_I1_0123456_0_1_C987650_sdark.fits Output FITS images with 32-bit float, 256x256 Dark image
Mask file SPITZER_I1_0123456_0_1_A012345_scmsk.fits Output FITS images with 16-bit integer, 256x256 Bit-mask associated with the skydark image
Flat file SPITZER_I1_0123456_0_1_C987650_flat.fits Output FITS images with 32-bit float, 256x256 Flat field image
Mask file SPITZER_I1_0123456_0_1_A012345_fcmsk.fits Output FITS images with 16-bit integer, 256x256 Bit-mask associated with the flat field image
Log file SPITZER_I1_0123456_0_1_A012345_flat.log ASCII file Flat field processing log
Log file SPITZER_I1_0123456_0_1_A012345_flens.txt ASCII file List of BCDs used for flat

* The calibration products have a unique "productid", different from the BCD and post-BCD "productid".
** The letter "C" stands for "calibration" product: in the case of a calibration product, "dcenum" refers to the first dce that was used in the calibration creation, "version" refers to the version of that first dce, and "Cnum" is the calibration number.

Pmask -- Download here (04/26/04):

File Type Name Example
SPITZER_I+channel_productid*_ dcenum_version_Cnum**_type.suffix
Format Description
Mask file SPITZER_I1_0123456_0_1_A012345_pmsk.fits Output FITS images with 16-bit integer, 256x256 Bit-mask which flags permanently damaged (hot and dead) pixels in the array (see bit definition and currently available mask files)

* The calibration products have a unique "productid", different from the BCD and post-BCD "productid".
** The letter "C" stands for "calibration" product: in the case of a calibration product, "dcenum" refers to the first dce that was used in the calibration creation, "version" refers to the version of that first dce, and "Cnum" is the calibration number.


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This file was last modified on Mon Jan 12 14:45:39 2009.
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