Data formats ============ This section gives a description of the raw data produced by PANIC and how they are organized. However, for a deeper description, see the GEIRS_ manual. Detector -------- The PANIC instrument had initially was mounted with a mosaic of four 2k x 2k HAWAII-2RG_ detectors. However, during 2020 a new single (monolithic) 4k x 4k HAWAII-4RG_ detector was installed due to the damages in the HAWAII-2RG_. * H2RG: The detector is an array (FPA) of four HAWAII-2RG_ detectors. The inter-chip gap between the detectors is only 167 pixels (or 75 arcsec at the 2.2m telescope) and is filled by dithering with sufficient amplitude. For applications which image only 30x30 arcmin this design is ideal. HAWAII-2RG_ detectors have an effective surface of 2040x2040 sensitive pixels. A 4-pixel wide border is used as reference to correct for relatively slow bias drifts. * H4RG: The HAWAII-4RG_ detector is a 4096x4096 pixels with 15um pixel pitch; it is the next generation, state-of-the-art readout integrated circuit for visible and infrared instrumentation in ground-based and space-based telescope applications. FITS ---- GEIRS_, the software part in charge of the data acquisition and saving, is capable of saving the frames in different FITS_ (Flexible Image Transport System) formats (integrated, FITS-cubes, MEF, etc ). Next ones are available in the Observation Tool (OT_) when an OP (Observing Program) is defined: - Multi-Extension FITS (MEF) - Integrated - Multi-Extension FITS (MEF) - Cube - Integrated All (SEF - Integrated) - FITS Cube (SEF - Cube) - Individual (SEF - Individual) However, PAPI does not accept any kind of FITS_ data files available in GEIRS_, only the configured in the OT, except `Individual`. As result, PAPI accepts the next type of FITS files (in order of preference): - Integrated Multi-Extension-FITS (MEF): a unique FITS file with four extensions (MEF), where each extension corresponds to one of the 4 images produced by the single detector chips. If the number of coadd (NCOADDS) is > 0, then they will be integrated (arithmetic sum) in a single image. This is the default and more common saving mode used; in fact, it is the **default** and more wished saving mode. This mode will also be used when the software or hardware sub-windowing is set and the integrated option is selected. Then, there will be an extension for each sub-window. (This mode makes sense only for the 4xH2RG) - Non-integrated Multi-Extension-FITS (MEF): a unique FITS file with four extensions (MEF), one per each detector (or window), having each extension N planes, where N is the number of coadds (NCOADDS), ie. a cube of N planes. This mode will be also used when the software or hardware subwindowing is set up and the no-integrated option is selected. (This mode makes sense only for the 4xH2RG) - Single integrated FITS file: the four H2RG detectors / single monolithic H4RG are/is saved in single file and in a single extension FITS image (SEF). If the number of coadds (NCOADDS) is > 0, then they are integrated (arithmetic sum) in a single frame. - Single non-integrated FITS-cube: the four detectors/single monolithic H4RG are/is saved in a single extension FITS (SEF) file, and each individual exposition in a plane/layer of a cube. It means N planes, where N is the number of coadds or expositions. .. Note:: Currently PAPI is **not working** with non-integrated individual files of an exposition. In case you are interested in no-integrated files and wish to reduce the data with PAPI, you should use SEF or MEF non-integrated FITS-cube mode. | Beware that the order of the chip in the raw image produced is as described in next figure: .. image:: _static/standard_full_q.jpg :align: center :scale: 60% | HAWAII-4RG ********** * Hawaii-4RG is a monolithic IR detector, therefore neither quadrants nor MEF files do not make sense in that case. H4RG Header ''''''''''' The header keywords currently used in a raw **H4RG** PANIC FITS file is as shown bellow: :: SIMPLE = T BITPIX = 32 NAXIS = 2 / 2 NAXIS1 = 4096 NAXIS2 = 4096 EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H BSCALE = 1. BZERO = 0. / [adu] real = bzero + bscale*value BUNIT = 'adu ' / [adu] MJD-OBS = 59698.561326 / [d] Modified Julian Date of DATE-OBS DATE-OBS= '2022-04-29T13:27:09.3989' / [d] UTC end of first frame read DATE = '2022-04-29T13:33:13' / file creation date (YYYY-MM-DDThh:mm:ss UT) UT = 48429.398901 / [s] 13:27:09.3989 UTC at end of first frame rea LST = 16354.189459 / [s] local sidereal time: 04:32:34 (EOread) ALT = 55.413811 / [deg] Altitude of the object above horizon AZ = 111.106918 / [deg] Azimuth (S=0, W=+90) of the object PARANG = 68.593735 / [deg] Parallactic angle ORIGIN = 'Centro Astronomico Hispano Aleman (CAHA)' OBSERVER= 'my_observer' TELESCOP= 'CA-3.5 ' FRATIO = 'F/10 ' / [1] OBSGEO-L= 8.724 / [deg] telesc. geodet. longit. 2015A&A..574A..36 OBSGEO-B= 49.396 / [deg] telesc. geodet. latit. 2015A&A..574A..36R OBSGEO-H= 560. / [m] above sea level 2015A&A..574A..36R LAMPSTS = ' ' / calib. lamp INSTRUME= 'PANIC ' / PAnoramic Near Infrared camera for Calar Alto CAMERA = 'HgCdTe IR-Camera (1 H4RGs)' PIXSCALE= 0.186667 / [arcsec/pix] EGAIN1 = 4. / [e-/adu] electrons/DN ENOISE1 = 16. / [e-] electrons/read ems=1 ROVER = 'MPIA IR-ROelectronic Vers. 3.1' / Version det. electronics WPOS = 5 / [ct] number of GEIRS wheels W1POS = 'Coldstop22' W2POS = 'Blank ' W3POS = 'Blank ' W4POS = 'Blank ' W5POS = 'Blank ' FILTER = 'NO ' / filter macro name of filter combinations STRT_INT= 48429.398901 / [s] 13:27:09.3989 start integration (UT) STOP_INT= 48463.913569 / [s] 13:27:43.9136 stop integration (UT) RA = 13.856732 / [deg] R.A.: 00:55:25.6 DEC = 49.296 / [deg] Dec.: +49:17:46 EQUINOX = 2000. / [a] Julian Epoch AIRMASS = 1.214279 / [1] airmass HA = 54.29408 / [deg] H.A. '03:37:10.58' T_FOCUS = 0. / [mm] telescope focus CASSPOS = 0. / [deg] cassegrain position rel. to NSEW OBJECT = 'J005525+491745' / telescope target POINT_NO= 0 / [ct] pointing counter DITH_NO = 0 / [ct] dither step EXPO_NO = 10 / [ct] exposure/read counter FILENAME= 'OPT_FOCUS_DARK_01_0001.fits' FILE_ID = 'Panic.2022-04-29T13:27:09.398_0001_001' / instru., time, image, windo TPLNAME = ' ' / macro/template name NQCHAN = 64 / [ct] output channels of each Hawaii chip PTIME = 2 / pixel-time-base index PREAD = 10000 / [ns] pixel read selection PSKIP = 150 / [ns] pixel skip selection LSKIP = 201 / [ns] line skip selection READMODE= 'continuous.sampling.read' / read cycle-type IDLEMODE= 'wait ' / idle to read transition IDLETYPE= 'ReadWoConv' / idle cycle-type SAVEMODE= 'continuous.sampling.read' / save cycle-type NEXP = 6 / cycle repeat count CPAR1 = 2 / cycle type parameter ITIME = 2.765469 / [s] scheduled integration time CTIME = 5.530939 / [s] read-mode cycle time EMSAMP = 1 / [ct] electronic multi-sampling NCOADDS = 6 / [ct] coadds (total) EXPTIME = 16.592816 / [s] total integ. time FRAMENUM= 1 / sum of 6 image(s) SKYFRAME= 'unknown ' DETSEC = '[1:4096,1:4096]' / [pix] xrange and yrange of window DATASEC = '[1:4096,1:4096]' / [pix] xy-range of science data DETSIZE = '[1:4096,1:4096]' / [px] full size of the 4 detector mosaic CHIPSIZX= 4096 / [pix] single chip pixels in x CHIPSIZY= 4096 / [pix] single chip pixels in y HINVDIR = 0 / left-right directions of horiz. scanner VINVDIR = 0 / top-bottom directions of vert. scanner DETROT90= 2 / [ct] 90 deg SW image cw rotations DETXYFLI= 0 / [1] SW image flip (1=RightLeft, 2=UpDown) B_EXT1 = 2.080078 / [V] external bias 2130 B_DSUB1 = 0.600179 / [V] det. bias voltage DSUB 1034 B_VREST1= 0.30009 / [V] det. bias voltage VRESET 517 B_VBIAG1= 2.199707 / [V] det. bias voltage VBIASGATE 3604 B_VNBIA1= 0. / [V] det. bias voltage VNBIAS 0 B_VPBIA1= 0. / [V] det. bias voltage VPBIAS 0 B_VNCAS1= 0. / [V] det. bias voltage VNCASC 0 B_VPCAS1= 0. / [V] det. bias voltage VPCASC 0 B_VBOUB1= 0. / [V] det. bias voltage VBIASOUTBUF 0 B_REFSA1= 0. / [V] det. bias voltage REFSAMPLE 0 B_REFCB1= 0. / [V] det. bias voltage REFCOLBUF 0 TEMP_A = 79.331001 / [K] Moly frame (-193.82 C) TEMP_B = 79.329002 / [K] Detector (-194 C) PRESS1 = 4.0E-05 / [Pa] (4.000e-10 bar) , 'pressure1' TEMPMON = 8 / [ct] # of temp. monitrd 2022-04-29 13:30 loc. t TEMPMON1= 99.503998 / [K] (-173.65 C) Cold plate TEMPMON2= 108.75 / [K] (-164.40 C) Lens Mount 1 TEMPMON3= 102.010002 / [K] (-171.14 C) Charcoal TEMPMON4= 77.526001 / [K] (-195.62 C) LN2 detector tank TEMPMON5= 104.050003 / [K] (-169.10 C) Filter wheel housing TEMPMON6= 105.139999 / [K] (-168.01 C) Preamps TEMPMON7= 81.721001 / [K] (-191.43 C) LN2 main tank TEMPMON8= 103.540001 / [K] (-169.61 C) Radiation shield CREATOR = 'GEIRS : trunk-r799M-65 (Apr 7 2022, 14:12:56)' PLX_API = 8.23 / Major and Minor PLX API version OS = 'Linux irws1 5.3.18-150300.59.63-default #1 SMP Tue Apr 5 12:47:31 UT' UUID = 'e931efc4-c7c0-11ec-a4f3-90b11c480ad2' / Universally unique identifier COMMENT = 'no comment' OBSERVAT= 'CAHA ' / Calar Alto, Andalucia, Spain, panic.caha.es CHIPID = '19908 ' / detect. HW ID OPCYCL = 10 / Operation cycle number OPDATE = '2016-02-18T15:55:00' / UT-date of operation cycle start MNTCYCL = 20 / Mounting cycle number MNTDATE = '2017-01-18T15:47:00' / UT-date of mounting cycle start CUNIT1 = 'deg ' / WCS units along axis 1 CUNIT2 = 'deg ' / WCS units along axis 2 CTYPE1 = 'RA---TAN' / WCS axis 1 CTYPE2 = 'DEC--TAN' / WCS axis 2 CRVAL1 = 13.8567324535148 / [deg] RA in center CRVAL2 = 49.296 / [deg] DEC in center CD1_1 = -5.18518520726098E-05 / [deg/px] WCS matrix diagonal CD2_2 = 5.18518520726098E-05 / [deg/px] WCS matrix diagonal CD1_2 = -1.0634992634962E-14 / [deg/px] WCS matrix outer diagonal CD2_1 = -1.0634992634962E-14 / [deg/px] WCS matrix outer diagonal CRPIX1 = 2049 / [px] RA and DEC center along axis 1 CRPIX2 = 2049 / [px] RA and DEC center along axis 2 EOF00000= 48429.398866 / [s] 13:27:09.3988 UTC past midnight EOF00001= 48433.443542 / [s] 13:27:13.4435 +4.04468 UTC past midnight EOF00002= 48436.208914 / [s] 13:27:16.2089 +2.76537 UTC past midnight EOF00003= 48438.974351 / [s] 13:27:18.9743 +2.76544 UTC past midnight EOF00004= 48441.739649 / [s] 13:27:21.7396 +2.7653 UTC past midnight EOF00005= 48444.506323 / [s] 13:27:24.5063 +2.76667 UTC past midnight EOF00006= 48447.270818 / [s] 13:27:27.2708 +2.76449 UTC past midnight EOF00007= 48450.036261 / [s] 13:27:30.0362 +2.76544 UTC past midnight EOF00008= 48452.801598 / [s] 13:27:32.8015 +2.76534 UTC past midnight EOF00009= 48455.567247 / [s] 13:27:35.5672 +2.76565 UTC past midnight EOF00010= 48458.332675 / [s] 13:27:38.3326 +2.76543 UTC past midnight EOF00011= 48461.098155 / [s] 13:27:41.0981 +2.76548 UTC past midnight EOF00012= 48463.863639 / [s] 13:27:43.8636 +2.76548 UTC past midnight OBS_TOOL= 'createDS' / PANIC Observing Tool Software version PROG_ID = ' ' / PANIC Observing Program ID OB_ID = '1 ' / PANIC Observing Block ID OB_NAME = 'OB_dummy' / PANIC Observing Block Name OB_PAT = 'unknown ' / PANIC Observing Block Pattern Type PAT_NAME= 'unknown ' / PANIC Observing Sequence Pattern Name PAT_EXPN= 1 / PANIC Observing Exposition Number PAT_NEXP= 7 / PANIC Observing Number of Expositions IMAGETYP= 'DARK ' / PANIC Image type END HAWAII-2RG ********** Next table shows the mapping of extension/quadrant names and detectors with the H2RG detector array: +------------------------+------+------+------+-------+ | Extension Name | Q1 | Q2 | Q3 | Q4 | +========================+======+======+======+=======+ | Detector Hw ID | SG1 | SG2 | SG3 | SG4 | +------------------------+------+------+------+-------+ Note that the order of the extensions in the FITS file is Q1 (ext. 1), Q2 (ext. 2), Q3 (ext. 3) and Q4 (ext. 4). .. Note:: The above extension name and order are only valid from version GEIRS-r731M-18 onwards. H2RG Header '''''''''''' The header keywords currently used in a raw **H2RG** PANIC FITS file is as shown bellow: **Primary Header** :: SIMPLE = T BITPIX = 32 NAXIS = 2 / 2 NAXIS1 = 4096 NAXIS2 = 4096 EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H BSCALE = 1. BZERO = 0. / [adu] real = bzero + bscale*value BUNIT = 'adu ' / [adu] MJD-OBS = 57170.68257 / [d] Modified julian date 'days' of observation DATE-OBS= '2015-05-28T16:22:54.0402' / [d] UT-date of observation end DATE = '2015-05-28T16:22:54' / file creation date (YYYY-MM-DDThh:mm:ss UT) UT = 58974.040247 / [s] 16:22:54.0402 UTC at EOread LST = 30949.087329 / [s] local sidereal time: 08:35:49.087 (EOread) ORIGIN = 'Centro Astronomico Hispano Aleman (CAHA)' OBSERVER= 'Mathar ' TELESCOP= 'CA-2.2 ' FRATIO = 'F/08 ' / [1] OBSGEO-L= -2.546135 / [deg] telescope geograph. longit. 2015A&A..574A OBSGEO-B= 37.223037 / [deg] telescope geograph. latit. 2015A&A..574A. OBSGEO-H= 2168. / [m] above sea level 2015A&A..574A..36R LAMPSTS = ' ' / calib. lamp INSTRUME= 'PANIC ' / PAnoramic Near Infrared camera for Calar Alto CAMERA = 'HgCdTe (4096x4096) IR-Camera (4 H2RGs)' PIXSCALE= 0.45 / [arcsec/px] EGAIN1 = 4.84 / [ct] electrons/DN EGAIN2 = 4.99 / [ct] electrons/DN EGAIN3 = 5.02 / [ct] electrons/DN EGAIN4 = 5.45 / [ct] electrons/DN ENOISE1 = 16. / [ct] electrons/read ems=1 ENOISE2 = 16.6 / [ct] electrons/read ems=1 ENOISE3 = 18.5 / [ct] electrons/read ems=1 ENOISE4 = 17.9 / [ct] electrons/read ems=1 ROVER = 'MPIA IR-ROelectronic Vers. 3' / Version det. electronics WPOS = 5 / [ct] number of GEIRS wheels W1POS = 'Coldstop22' W2POS = 'H ' W3POS = 'Ks ' W4POS = 'dummy ' W5POS = 'Black ' FILTER = 'NO ' / filter macro name of filter combinations STRT_INT= 58943.164225 / [s] 16:22:23.1642 start integration (UT) STOP_INT= 58946.502476 / [s] 16:22:26.5025 stop integration (UT) RA = 172.8182 / [deg] R.A.: 11:31:16.4 DEC = 33.088802 / [deg] Dec.: +33:05:20 EQUINOX = 2000. / [a] Julian Epoch OBSEPOCH= 2015.403645 / [a] Julian Epoch AIRMASS = 1.232127 / [1] airmass HA = 316.144687 / [deg] H.A. '21:04:34.72' T_FOCUS = 0. / [mm] telescope focus CASSPOS = 0. / [deg] cassegrain position rel. to NSEW OBJECT = 'unknown ' / telescope target POINT_NO= 0 / [ct] pointing counter DITH_NO = 0 / [ct] dither step EXPO_NO = 2 / [ct] exposure/read counter FILENAME= 'test_0001.fits' FILE_ID = 'Panic.2015-05-28T16:22:23.164_0001_001' / instru., time, image, windo TPLNAME = ' ' / macro/template name TIMER0 = 2740 / [ms] TIMER1 = 2740 / [ms] TIMER2 = 0 / [us] PTIME = 2 / pixel-time-base index PREAD = 10000 / [ns] pixel read selection PSKIP = 150 / [ns] pixel skip selection LSKIP = 150 / [ns] line skip selection READMODE= 'line.interlaced.read' / read cycle-type IDLEMODE= 'wait ' / idle to read transition IDLETYPE= 'ReadWoConv' / idle cycle-type SAVEMODE= 'line.interlaced.read' / save cycle-type NEXP = 1 / cycle repeat count CPAR1 = 1 / cycle type parameter ITIME = 2.739931 / [s] (on chip) integration time CTIME = 5.481201 / [s] read-mode cycle time HCOADDS = 1 / [ct] # of hardware coadds EMSAMP = 1 / [ct] electronic multi-sampling PCOADDS = 1 / [ct] # of coadded plateaus/periods SCOADDS = 1 / [ct] # of software coadds SWMSAMP = 1 / [ct] # software multisampling NCOADDS = 1 / [ct] effective coadds (total) EXPTIME = 2.739931 / [s] total integ. time FRAMENUM= 1 / of 1 saved SKYFRAME= 'unknown ' DETSEC = '[1:4096,1:4096]' / [px] xrange and yrange of window DATASEC = ' ' / [px] xy-range of science data DETSIZE = '[1:4096,1:4096]' / [px] full size of the 4 detector mosaic CHIPSIZX= 2048 / [px] single chip pixels in x CHIPSIZY= 2048 / [px] single chip pixels in y DETROT90= 0 / [ct] 90 deg SW image cw rotations DETXYFLI= 0 / [1] SW image flip (1=RightLeft, 2=UpDown) B_EXT1 = 2.679688 / [V] external bias 2744 B_EXT2 = 2.679688 / [V] external bias 2744 B_EXT3 = 2.679688 / [V] external bias 2744 B_EXT4 = 2.679688 / [V] external bias 2744 B_DSUB1 = 1.569727 / [V] det. bias voltage DSUB 3420 B_DSUB2 = 1.569727 / [V] det. bias voltage DSUB 3420 B_DSUB3 = 1.569727 / [V] det. bias voltage DSUB 3420 B_DSUB4 = 1.569727 / [V] det. bias voltage DSUB 3420 B_VREST1= 1.07999 / [V] det. bias voltage VRESET 2353 B_VREST2= 1.07999 / [V] det. bias voltage VRESET 2353 B_VREST3= 1.07999 / [V] det. bias voltage VRESET 2353 B_VREST4= 1.07999 / [V] det. bias voltage VRESET 2353 B_VBIAG1= 2.199707 / [V] det. bias voltage VBIASGATE 3604 B_VBIAG2= 2.199707 / [V] det. bias voltage VBIASGATE 3604 B_VBIAG3= 2.199707 / [V] det. bias voltage VBIASGATE 3604 B_VBIAG4= 2.199707 / [V] det. bias voltage VBIASGATE 3604 B_VNBIA1= 0. / [V] det. bias voltage VNBIAS 0 B_VNBIA2= 0. / [V] det. bias voltage VNBIAS 0 B_VNBIA3= 0. / [V] det. bias voltage VNBIAS 0 B_VNBIA4= 0. / [V] det. bias voltage VNBIAS 0 B_VPBIA1= 0. / [V] det. bias voltage VPBIAS 0 B_VPBIA2= 0. / [V] det. bias voltage VPBIAS 0 B_VPBIA3= 0. / [V] det. bias voltage VPBIAS 0 B_VPBIA4= 0. / [V] det. bias voltage VPBIAS 0 B_VNCAS1= 0. / [V] det. bias voltage VNCASC 0 B_VNCAS2= 0. / [V] det. bias voltage VNCASC 0 B_VNCAS3= 0. / [V] det. bias voltage VNCASC 0 B_VNCAS4= 0. / [V] det. bias voltage VNCASC 0 B_VPCAS1= 0. / [V] det. bias voltage VPCASC 0 B_VPCAS2= 0. / [V] det. bias voltage VPCASC 0 B_VPCAS3= 0. / [V] det. bias voltage VPCASC 0 B_VPCAS4= 0. / [V] det. bias voltage VPCASC 0 B_VBOUB1= 0. / [V] det. bias voltage VBIASOUTBUF 0 B_VBOUB2= 0. / [V] det. bias voltage VBIASOUTBUF 0 B_VBOUB3= 0. / [V] det. bias voltage VBIASOUTBUF 0 B_VBOUB4= 0. / [V] det. bias voltage VBIASOUTBUF 0 B_REFSA1= 0. / [V] det. bias voltage REFSAMPLE 0 B_REFSA2= 0. / [V] det. bias voltage REFSAMPLE 0 B_REFSA3= 0. / [V] det. bias voltage REFSAMPLE 0 B_REFSA4= 0. / [V] det. bias voltage REFSAMPLE 0 B_REFCB1= 0. / [V] det. bias voltage REFCOLBUF 0 B_REFCB2= 0. / [V] det. bias voltage REFCOLBUF 0 B_REFCB3= 0. / [V] det. bias voltage REFCOLBUF 0 B_REFCB4= 0. / [V] det. bias voltage REFCOLBUF 0 TEMP_A = 79.068001 / [K] Moly frame (-194.08 C) TEMP_B = 79.999001 / [K] Detector (-193 C) PRESS1 = 1.0E-05 / [Pa] (1.020e-10 bar) , 'pressure1' TEMPMON = 8 / [ct] # of temp. monitrd 2015-05-28 16:21 loc. t TEMPMON1= 84.508003 / [K] (-188.64 C) Cold plate TEMPMON2= 97.056 / [K] (-176.09 C) Lens Mount 1 TEMPMON3= 85.961998 / [K] (-187.19 C) Charcoal TEMPMON4= 75.846001 / [K] (-197.30 C) LN2 detector tank TEMPMON5= 87.633003 / [K] (-185.52 C) Filter wheel housing TEMPMON6= 94.026001 / [K] (-179.12 C) Preamps TEMPMON7= 79.591003 / [K] (-193.56 C) LN2 main tank TEMPMON8= 89.347 / [K] (-183.80 C) Radiation shield CREATOR = 'GEIRS : trunk-r737M-13 (May 28 2015, 16:17:00), Panic' COMMENT = 'no comment' OBSERVAT= 'CAHA ' / Calar Alto, Almeria, Andalucia, Spain, panic.ca OPCYCL = 9 / Operation cycle number OPDATE = '2015-04-28T15:16:00' / UT-date of operation cycle start MNTCYCL = 7 / Mounting cycle number MNTDATE = '2015-01-29T15:00:00' / UT-date of mounting cycle start HIERARCH CAHA AMBI WINSP = 4.5 / [m/s] wind speed day=20150528 UT=1448 HIERARCH CAHA AMBI WINDIR = 149. / [deg] wind direction day=20150528 UT=1448 HIERARCH CAHA AMBI TEMP = 15.2 / [C] temperature day=20150528 UT=1448 HIERARCH CAHA AMBI HUMI = 46 / [%] rel. humidity day=20150528 UT=1448 HIERARCH CAHA AMBI DEWP = 3.7 / [C] dew point day=20150528 UT=1448 HIERARCH CAHA AMBI PRESS = 778. / [hPa] air pressure day=20150528 UT=1448 HIERARCH CAHA AMBI CLOUD = -25.7 / [] cloud sensor day=20150528 UT=1448 COMMENT Linux panic22 3.11.6-4-desktop #1 SMP PREEMPT Wed Oct 30 18:04:56 UTC 20 COMMENT 13 (e6d4a27) x86_64 COMMENT Plx API Version 7.10 EOFRM000= 58943.164227 / [s] 16:22:23.1642 UTC past midnight EOFRM002= 58944.177113 / [s] 16:22:24.1771 +1.01289 UTC past midnight END **Extensions Header (SG1)** :: XTENSION= 'IMAGE ' / IMAGE extension BITPIX = 32 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 2048 / length of data axis 1 NAXIS2 = 2048 / length of data axis 2 PCOUNT = 0 / required keyword; must = 0 GCOUNT = 1 / required keyword; must = 1 EXTNAME = 'Q1 ' HDUVERS = 1 DETSEC = '[2049:4096,1:2048]' / [px] section of DETSIZE DATASEC = '[5:2044,5:2044]' / [px] section of CHIPSIZ PERCT025= 2688. / 2.5 % percentile ADU PERCT050= 2700. / 5 % percentile ADU PERCT075= 2705. / 7.5 % percentile ADU PERCT100= 2708. / 10 % percentile ADU PERCT125= 2712. / 12.5 % percentile ADU PERCT150= 2714. / 15 % percentile ADU PERCT175= 2716. / 17.5 % percentile ADU PERCT200= 2718. / 20 % percentile ADU PERCT225= 2720. / 22.5 % percentile ADU PERCT250= 2723. / 25 % percentile ADU PERCT275= 2725. / 27.5 % percentile ADU PERCT300= 2726. / 30 % percentile ADU PERCT325= 2728. / 32.5 % percentile ADU PERCT350= 2730. / 35 % percentile ADU PERCT375= 2732. / 37.5 % percentile ADU PERCT400= 2733. / 40 % percentile ADU PERCT425= 2735. / 42.5 % percentile ADU PERCT450= 2736. / 45 % percentile ADU PERCT475= 2738. / 47.5 % percentile ADU PERCT500= 2739. / 50 % percentile ADU PERCT525= 2741. / 52.5 % percentile ADU PERCT550= 2743. / 55 % percentile ADU PERCT575= 2745. / 57.5 % percentile ADU PERCT600= 2746. / 60 % percentile ADU PERCT625= 2748. / 62.5 % percentile ADU PERCT650= 2749. / 65 % percentile ADU PERCT675= 2750. / 67.5 % percentile ADU PERCT700= 2753. / 70 % percentile ADU PERCT725= 2754. / 72.5 % percentile ADU PERCT750= 2756. / 75 % percentile ADU PERCT775= 2758. / 77.5 % percentile ADU PERCT800= 2760. / 80 % percentile ADU PERCT825= 2763. / 82.5 % percentile ADU PERCT850= 2765. / 85 % percentile ADU PERCT875= 2768. / 87.5 % percentile ADU PERCT900= 2772. / 90 % percentile ADU PERCT925= 2776. / 92.5 % percentile ADU PERCT950= 2780. / 95 % percentile ADU PERCT975= 2787. / 97.5 % percentile ADU RA = 332.367528 / [deg] R.A.: 22:09:28.2 DEC = 51.084307 / [deg] Dec.: +51:05:04 PIXSCALE= 0.45 / [arcsec/px] CUNIT1 = 'deg ' / WCS units along axis 1 CUNIT2 = 'deg ' / WCS units along axis 2 CTYPE1 = 'RA---TAN' / WCS axis 1 CTYPE2 = 'DEC--TAN' / WCS axis 2 CRVAL1 = 332.36752753434 / [deg] RA in mosaic center CRVAL2 = 51.0843069975685 / [deg] DEC in mosaic center CD1_1 = -0.000124999996688631 / [deg/px] WCS matrix diagonal CD2_2 = 0.000124999996688631 / [deg/px] WCS matrix diagonal CD1_2 = -2.56379278852432E-14 / [deg/px] WCS matrix outer diagonal CD2_1 = -2.56379278852432E-14 / [deg/px] WCS matrix outer diagonal CRPIX1 = -81 / [px] RA and DEC center along axis 1 CRPIX2 = 2132 / [px] RA and DEC center along axis 2 DET_ID = 'SG1 ' / lower right (SW) chip COMMENT WCS assumes CHIPGAPX=167, CHIPGAPY=167, north=90 deg BSCALE = 1. BZERO = 0. END .. _otkeywords: Observation Tool keywords ------------------------- Next keywords are automatically added to the FITS header by the PANIC Observation Tool (OT_), as each file is created. If these are not saved, neither PAPI nor PQL will work correctly:: OBS_TOOL= 'OT_V1.1 ' / PANIC Observing Tool Software version PROG_ID = ' ' / PANIC Observing Program ID OB_ID = '6 ' / PANIC Observing Block ID OB_NAME = 'OB CU Cnc Ks 2' / PANIC Observing Block Name OB_PAT = '5-point ' / PANIC Observing Block Pattern Type PAT_NAME= 'OS Ks 2 ' / PANIC Observing Secuence Pattern Name PAT_EXPN= 1 / PANIC Pattern exposition number PAT_NEXP= 5 / PANIC Pattern total number of expositions IMAGETYP= 'SCIENCE ' / PANIC Image type Data ---- Raw images pixels are coded with 32-bit signed integers (BITPIX=32), however final reduced images are coded with 32-bit single precision floating point (BITPIX=-32). The layout of each chip image in a raw image is described above. Classification -------------- Any raw frame can be classified on the basis of a set of keywords read from its header. Data classification is typically carried out by the Pipeline at start or by PQL, that apply the same set of classification rules. The association of a raw frame with calibration data (e.g., of a science frame with a master dark frame) can be obtained by matching the values of a different set of header keywords (filter, texp, ncoadds, itime, readmode, date-obs, etc). Each kind of raw frame is typically associated to a single PAPI pipeline recipe, i.e., the recipe assigned to the reduction of that specific frame type. In the pipeline environment this recipe would be launched automatically. In the following, all PANIC raw data frames are listed, together with the keywords used for their classification and correct association. .. tabularcolumns:: |r|J| ======================= =========== Type Description ======================= =========== ``DARK`` Dark frame ``DOME_FLAT`` Dome flat-field frame (lamp on/lamp off) ``SKY_FLAT`` Sky flat-field frame ``FOCUS`` Focus frame of a focus series ``SCIENCE`` Science frame ``SKY`` Sky frame (mostly clear) used for extended object reduction ======================= =========== Data grouping ------------- Once the raw files are classified, they are grouped into observing sequences, taking into account the :ref:`keywords ` added by the Observation Tool (OT_), and finding out the dither sequences observed. This way, all files beloging to the same observing sequence will be processed together. .. _astromatic: http://www.astromatic.net/ .. _sextractor: http://www.astromatic.net/software/sextractor .. _scamp: http://www.astromatic.net/software/scamp .. _swarp: http://www.astromatic.net/software/swarp .. _HAWAII-2RG: http://panic.iaa.es/detectors .. _HAWAII-4RG: http://www.teledyne-si.com/products-and-services/imaging-sensors/hawaii-4rg .. _GEIRS: http://www2.mpia-hd.mpg.de/~mathar/public/PANIC-SW-DCS-01.pdf .. _OT: http://www.iaa.es/~agsegura/PANIC_OT/PANIC_Observation_Tool.html .. _FITS: http://fits.gsfc.nasa.gov