.. _gsc-headers: ************************************************************** MAXI/GSC FITS Headers (:mod:`gdt.missions.maxi.gsc.headers`) ************************************************************** This module defines all of the FITS headers for the public data files. While these classes are not usually directly called by the user, we may load one up and see the contents and default values. For example, here is the set of header definitions for the :ref:`event files`: >>> from gdt.missions.maxi.gsc.headers import EventsHeaders >>> hdrs = EventsHeaders() >>> hdrs Here is the ``PRIMARY`` header and default values (retrieved by index): >>> hdrs[0] TELESCOP= 'MAXI ' / Mission name INSTRUME= 'GSC ' / Instrument name (GSC, SSC_H or SSC_Z) GPCMOID = 'NA ' / Gas Proportional Counter ID DATAMODE= '' / Data mode (32 or 64 BIT for GSC, STANDARD for S OBSERVER= 'MAXI Team' / Principal Investigator NETWORKI= '' / Network interface (1553B/Ether) FORMVER = '' / Event file format version DATATYPE= 0 / Data Type ID: Obs./Sim./Ground Cal. DATAFORM= 0 / Event Data Format ID DATE-OBS= '' / observation start date and time TIME-OBS= '' / Start time DATE-END= '' / observation end date and time TIME-END= '' / Stop time TSTART = 0.0 / time of first data TSTOP = 0.0 / time of last data TELAPSE = 0.0 / TSTOP-TSTART ONTIME = 0.0 / Actual time RADECSYS= 'FK5 ' / World Coordinate System EQUINOX = 2000.0 / Equinox for coordinate system MJDREFI = 51544 / MJD reference day MJDREFF = 0.00074287037037037 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / reference time TIMESYS = 'TT ' / time measured from TIMEUNIT= 's ' / unit for time keyword TIMEDEL = 0.0 / Smallest time increment OBJECT = '' / HEALPix tile number RA_NOM = 0.0 / RA of the tile center [deg] DEC_NOM = 0.0 / DEc of the tile center [deg] RADIUS_I= 0.0 / inner radius for event extraction [degree] RADIUS_O= 0.0 / outer radius for event extraction [degree] CREATOR = '' / Software USER = '' / user name of the creator ORIGIN = 'ISAS/JAXA' / Tape writing institution HPX_ORDR= 'RING ' / HEALPIX order scheme (RING or NEST) HPX_NSID= 8 / HEALPIX nside PROCVER = '' / Major.Minor.Tool.CALDB SEQPNUM = 1 / Number of the processing with this PROCVER SOFTVER = '' / HEASOFT version CALDBVER= '' / CALDB version NEVENTS = 0 / Number of events DETNAM = '' / Detector EXPOSURE= 0.0 / Exposure time LIVETIME= 0.0 / On-source time MJD-OBS = 0.0 / MJD of data start time TIMEZERO= 0.0 / Time Zero DATE = '2024-02-22T21:55:28.225' / date of file creation (GMT) And here is the ``STDGTI`` header and default values: >>> hdrs['STDGTI'] EXTNAME = 'STDGTI ' / name of this binary table extension HDUCLASS= 'OGIP ' / Format conform to OGIP standard HDUCLAS1= 'GTI ' / File contains Good Time Intervals HDUCLAS2= 'STANDARD' / File contains Good Time Intervals TELESCOP= 'MAXI ' / Mission name DATAMODE= '' / Data mode (32 or 64 BIT for GSC, STANDARD for S DETNAM = '' / Detector INSTRUME= 'GSC ' / Instrument name (GSC, SSC_H or SSC_Z) OBJECT = '' / HEALPix tile number ONTIME = 0.0 / Actual time EXPOSURE= 0.0 / Exposure time LIVETIME= 0.0 / On-source time DATE-OBS= '' / observation start date and time TIME-OBS= '' / Start time DATE-END= '' / observation end date and time TIME-END= '' / Stop time TSTART = 0.0 / time of first data TSTOP = 0.0 / time of last data TELAPSE = 0.0 / TSTOP-TSTART MJD-OBS = 0.0 / MJD of data start time MJDREFI = 51544 / MJD reference day MJDREFF = 0.00074287037037037 / MJD reference (fraction of day) TIMEREF = 'LOCAL ' / reference time TIMESYS = 'TT ' / time measured from TIMEUNIT= 's ' / unit for time keyword EQUINOX = 2000.0 / Equinox for coordinate system RADECSYS= 'FK5 ' / World Coordinate System USER = '' / user name of the creator FILIN001= '' / Input file name CREATOR = '' / Software ORIGIN = 'ISAS/JAXA' / Tape writing institution HDUNAME = 'STDGTI ' / ASCDM block name MTYPE1 = 'TIME ' / Data type MFORM1 = 'START,STOP' / names of the start and stop columns METYP1 = 'R ' / data descriptor type: Range, binned data PROCVER = '' / Major.Minor.Tool.CALDB CALDBVER= '' / CALDB version SOFTVER = '' / HEASOFT version SEQPNUM = 1 / Number of the processing with this PROCVER OBS_ID = '' / Observation ID CLOCKAPP= 'T ' / If clock correction are applied (F/T) GPCMOID = 'NA ' / Gas Proportional Counter ID OBSERVER= 'MAXI Team' / Principal Investigator NETWORKI= '' / Network interface (1553B/Ether) FORMVER = '' / Event file format version DATATYPE= 0 / Data Type ID: Obs./Sim./Ground Cal. DATAFORM= 0 / Event Data Format ID TIMEDEL = 0.0 / Smallest time increment RA_NOM = 0.0 / RA of the tile center [deg] DEC_NOM = 0.0 / DEc of the tile center [deg] RADIUS_I= 0.0 / inner radius for event extraction [degree] RADIUS_O= 0.0 / outer radius for event extraction [degree] HPX_ORDR= 'RING ' / HEALPIX order scheme (RING or NEST) HPX_NSID= 8 / HEALPIX nside DATE = '2024-02-22T21:55:28.225' / date of file creation (GMT) See :external:ref:`Data File Headers` for more information about creating and using FITS headers. Reference/API ============= .. automodapi:: gdt.missions.maxi.gsc.headers :inherited-members: