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Type:
Task
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Status: Open (View Workflow)
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Priority:
Normal
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Resolution: Unresolved
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Labels:
For the Dec 2022 run:
Following DAMD-138, a few things about the content of the AGCC image files need clarifying.
Looking at Sep 2022 data, in addition to the raw camera images, there are present in some of the files TABLEn HDUs that provide detection information:
Filename: /data/raw/2022-09-22/agcc/agcc_20220921_2222058.fits No. Name Ver Type Cards Dimensions Format 0 PRIMARY 1 PrimaryHDU 6 () 1 CAM1 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 2 CAM2 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 3 CAM3 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 4 CAM4 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 5 CAM5 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 6 CAM6 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 7 TABLE1 1 BinTableHDU 31 81R x 10C [E, E, E, E, E, E, I, I, E, E] 8 TABLE2 1 BinTableHDU 31 60R x 10C [E, E, E, E, E, E, I, I, E, E] 9 TABLE3 1 BinTableHDU 31 47R x 10C [E, E, E, E, E, E, I, I, E, E] 10 TABLE4 1 BinTableHDU 31 60R x 10C [E, E, E, E, E, E, I, I, E, E] 11 TABLE5 1 BinTableHDU 31 68R x 10C [E, E, E, E, E, E, I, I, E, E] 12 TABLE6 1 BinTableHDU 31 60R x 10C [E, E, E, E, E, E, I, I, E, E]
XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / array data type NAXIS = 2 / number of array dimensions NAXIS1 = 36 / length of dimension 1 NAXIS2 = 81 / length of dimension 2 PCOUNT = 0 / number of group parameters GCOUNT = 1 / number of groups TFIELDS = 10 / number of table fields TTYPE1 = 'moment_00' TFORM1 = 'E ' TTYPE2 = 'centroid_x' TFORM2 = 'E ' TTYPE3 = 'centroid_y' TFORM3 = 'E ' TTYPE4 = 'moment_20' TFORM4 = 'E ' TTYPE5 = 'moment_11' TFORM5 = 'E ' TTYPE6 = 'moment_02' TFORM6 = 'E ' TTYPE7 = 'peak_x ' TFORM7 = 'I ' TTYPE8 = 'peak_y ' TFORM8 = 'I ' TTYPE9 = 'peak_intensity' TFORM9 = 'E ' TTYPE10 = 'background' TFORM10 = 'E ' EXTNAME = 'TABLE1 ' / extension name CHECKSUM= 'hdRAicR1hcR8hcR8' / HDU checksum updated 2022-09-21T22:22:08 DATASUM = '2017643151' / data unit checksum updated 2022-09-21T22:22:08
Questions:
- Are the TABLEn HDUs required? I had thought that such files should contain the raw camera images only.
- Following the review of
DAMD-138, it has been suggested that the TABLEn HDUs should contain an additional column flag. Assuming the TABLEn HDUs are necessary, this needs to be discussed and agreed. - The TABLEn HDUs appear in some of the files, but not in others, eg /data/raw/2022-09-22/agcc/agcc_20220921_2004424.fits does not contain such HDUs (see below). Why is this the case?
Filename: /data/raw/2022-09-22/agcc/agcc_20220921_2004424.fits No. Name Ver Type Cards Dimensions Format 0 PRIMARY 1 PrimaryHDU 6 () 1 CAM1 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 2 CAM2 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 3 CAM3 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 4 CAM4 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 5 CAM5 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16) 6 CAM6 1 ImageHDU 22 (1072, 1033) int16 (rescales to uint16)
- relates to
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- Done
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