--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = 8 / number of bits per data pixel
NAXIS = 0 / number of data axes
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
--- header unit 1: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / 8-bit bytes
NAXIS = 2 / 2-dimensional binary table
NAXIS1 = 8 / width of table in bytes
NAXIS2 = 4096 / number of rows in table
PCOUNT = 15851419 / size of special data area
GCOUNT = 1 / one data group (required keyword)
TFIELDS = 1 / number of fields in each row
TTYPE1 = 'COMPRESSED_DATA' / label for field 1
TFORM1 = '1PB(5427)' / data format of field: variable length array
ZIMAGE = T / extension contains compressed image
ZSIMPLE = T / file does conform to FITS standard
ZBITPIX = 16 / data type of original image
ZNAXIS = 2 / dimension of original image
ZNAXIS1 = 4096 / length of original image axis
ZNAXIS2 = 4096 / length of original image axis
ZTILE1 = 4096 / size of tiles to be compressed
ZTILE2 = 1 / size of tiles to be compressed
ZCMPTYPE = 'RICE_1' / compression algorithm
ZNAME1 = 'BLOCKSIZE' / compression block size
ZVAL1 = 32 / pixels per block
ZNAME2 = 'BYTEPIX' / bytes per pixel (1, 2, 4, or 8)
ZVAL2 = 2 / bytes per pixel (1, 2, 4, or 8)
BLANK = -32768
BZERO = 1.
BSCALE = 3.33333333333333E-05
CHECKSUM = 'kLaimKVfkKZfkKZf' / HDU checksum updated 2025-04-13T20:30:26
DATASUM = '2629365728' / data unit checksum updated 2025-04-13T19:41:16
DATE = '2025-04-13T19:40:44.000' / [ISO] HDU creation date
DATE-OBS = '2025-04-13T18:58:39.300' / [ISO] Observation date {DATE__OBS}
TELESCOP = 'SDO/HMI' / Telescope
INSTRUME = 'HMI_COMBINED' / For HMI: HMI_SIDE1, HMI_FRONT2, or HMI_COMBINED
WAVELNTH = 6173. / [angstrom] Wavelength
CAMERA = 3 / Camera
BUNIT = 'DN/s' / Physical Units
ORIGIN = 'SDO/JSOC-SDP' / Origin
CONTENT = 'CONTINUUM INTENSITY' / Content
QUALITY = 1024 / Level 1.5 quality
HISTORY Polynomial Coefficients used for Doppler velocity correction: 2.772366e+
HISTORY 02 -4.038102e-03 -1.551203e-05 -3.246071e-10
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
COMMENT De-rotation: ON; Un-distortion: ON; Re-centering: ON; Re-sizing: OFF; co
COMMENT rrection for cosmic-ray hits; correction front/side intensity implemente
COMMENT d for mod L; RSUNerr=5.0 pixels; dpath=/home/jsoc/releases/jsoc-v10.0.0/
COMMENT src/lev1.5_hmi/apps; linearity=1 with coefficients updated on 2014/01/15
COMMENT ; smooth=1; propagate eclipse bit from level 1; use of larger crop radiu
COMMENT s look-up tables
BLD_VERS = '-1000' / Code release build number of program that creat
HCAMID = 2 / HMI_SEQ_ID_EXP_PATH
TOTVALS = 11328773 / Total values
DATAVALS = 11328773 / Data values
MISSVALS = 0 / Missing values
SATVALS = 7485 / Saturated values
NORMALIZ =  / [DN/s] (MISSING) Original mean value of all on
DATAMIN = 0.13070550560951233 / [I] Minimum value 2
DATAMAX = 1.2955789566040039 / [I] Maximum value from all pixels
DATAMEDN = 0.99912600866173307 / [I] Median value from all pixels
DATAMEAN = 0.99965748476028571 / [I] Mean value from all pixels
DATARMS = 0.026147791631038808 / [I] Rms deviation from the mean value of all pi
DATASKEW = -3.9149703968150327 / [I] Skewness from the mean value of all pixels
DATAKURT = 92.242894610604125 / [I] Kurtosis of all pixels
CTYPE1 = 'HPLN-TAN' / CTYPE1: HPLN
CTYPE2 = 'HPLT-TAN' / CTYPE2: HPLT
CRPIX1 = 2039.26172 / [pixel] CRPIX1: location of the Sun center in C
CRPIX2 = 2051.50171 / [pixel] CRPIX2: location of the Sun center in C
CRVAL1 = 0. / [arcsec] CRVAL1: x origin
CRVAL2 = 0. / [arcsec] CRVAL2: y origin
CDELT1 = 0.50404131399999996 / [arcsec/pixel] image scale in the x direction
CDELT2 = 0.50404131399999996 / [arcsec/pixel] image scale in the y direction
CUNIT1 = 'arcsec' / [arcsec] CUNIT1: arcsec
CUNIT2 = 'arcsec' / [arcsec] CUNIT2: arcsec
CROTA2 = 180.01364100000001 / [deg] CROTA2: INST_ROT + SAT_ROT
CRDER1 = 0. / [arcsec] CRDER1: estimate of random error in co
CRDER2 = 0. / [arcsec] CRDER2: estimate of random error in co
CSYSER1 =  / [arcsec] (MISSING) CSYSER1: estimate of systema
CSYSER2 =  / [arcsec] (MISSING) CSYSER2: estimate of systema
WCSNAME = 'Helioprojective-cartesian' / WCS system name
DSUN_OBS = 149987033000. / [m] Distance from SDO to Sun center.
DSUN_REF = 149597864000. / [m] Astronomical Unit
RSUN_REF = 696000000. / [m] Reference radius of the Sun: 696,000,000.0
CRLN_OBS = 162.32029700000001 / [deg] Carrington longitude of the observer
CRLT_OBS = -5.7166900600000004 / [deg] Carrington latitude of the observer
HGLN_OBS =  / [deg] (MISSING) Stonyhurst longitude from CM of
CAR_ROT = 2296 / Carrington rotation number of CRLN_OBS
OBS_VR = 362.751892 / [m/s] velocity of the observer in radial direct
OBS_VW = 26613.199199999999 / [m/s] velocity of the observer solar
OBS_VN = 1575.4298100000001 / [m/s] velocity of the observer solar
RSUN_OBS = 957.15472399999999 / [arcsec] angular radius of Sun. Corresponds to
T_OBS = '2025.04.13_19:00:01.298_TAI' / [TAI] nominal time
T_REC = '2025.04.13_19:00:00.000_TAI' / [TAI] Slot time
TRECEPOC = '1993.01.01_00:00:00.000_TAI' / [TAI] Time of origin {T_REC_epoch}
TRECSTEP = 45. / [seconds] ts_eq step {T_REC_step}
TRECUNIT = 'secs' / ts_eq unit {T_REC_unit}
CADENCE = 45. / [seconds] repetition interval
DATASIGN = 1 / DATASIGN: sign of observable quantity wrt Sun c
HFLID = 1022 / HMI_SEQ_ID_FRAMELIST
HCFTID = 10 / HMI_SEQ_ID_FOCUS
QLOOK = 1 / QLOOK: 0=final data, 1=quick
CODEVER0 = '$Id: HMI_IQUV_averaging.c,v 1.57 2018/08/31 22:42:51 phil Exp $' / ve
CODEVER1 = '$Id: interpol_code.c,v 1.6 2017/08/31 22:17:13 arta Exp $' / version
CODEVER2 = '$Id: interpol_code.c,v 1.6 2017/08/31 22:17:13 arta Exp $' / version
CODEVER3 = '$Id: polcal.c,v 1.8 2016/10/03 19:11:21 arta Exp $' / version of the
CODEVER4 = '$Id: hmi_limbdark.c,v 1.11 2017/07/17 16:56:21 kehcheng Exp $' / vers
COEF_VER = '2' / version of the limb darkening coeficients.
LDCOEF0 = 45754.203099999999 / limb darkening coeficient 0, center value.
LDCOEF1 = 0.43621200300000001 / limb darkening coeficient 1.
LDCOEF2 = 0.119669423 / limb darkening coeficient 2.
LDCOEF3 = 0.0221441109 / limb darkening coeficient 3.
LDCOEF4 = 0.00379644637 / limb darkening coeficient 4.
LDCOEF5 = 0.00046842175700000002 / limb darkening coeficient 5.
CALVER64 = 268706066 / Calibration Version
RECNUM = 591253 / Recnum
DRMS_ID = 'hmi.Ic_noLimbDark_720s_nrt:591253:continuum' / DRMS ID
PRIMARYK = 'T_REC, CAMERA' / DRMS primary key
LICENSE = 'LICENSE' / CC0 1.0
HEADSUM = 'YA66Y854YA54Y554' / Keyword checksum
LONGSTRN = 'OGIP 1.0' / The HEASARC Long String Convention may be used.
COMMENT This FITS file may contain long string keyword values that are
COMMENT continued over multiple keywords. The HEASARC convention uses the &
COMMENT character at the end of each substring which is then continued
COMMENT on the next keyword which has the name CONTINUE.