origin,s,h,"ASC",,,"Source of FITS file"
creator,s,h,"acis_process_events - Version DS10.11",,,"tool that created this outpu"
ascdsver,s,h,"10.11",,,"Processing system revision"
asolfile,s,h,"pcadf26478_000N001_asol1.fits",,,""
thrfile,s,h,"acisD2005-07-01evtspltN0002.fits",,,""
tlmver,s,h,"P016",,,"Telemetry revision number (IP&CL)"
revision,i,h,1,,,"Processing version of data"
checksum,s,h,"3Gg7AFg75Fg7AFg7",,,"HDU checksum updated 2022-07-26T13:02:03"
datasum,s,h,"525700849",,,"data unit checksum updated 2022-07-26T13:01:00"
content,s,h,"EVT1",,,"What data product"
hduspec,s,h,"ACIS Telemetry Products: Level 0 to ASC Archive ICD Rev 2.11",,,"ICD r"
hdudoc,s,h,"ASC-FITS-2.0: McDowell, Rots: ASC FITS File Designers Guide",,,""
hduvers,s,h,"1.0.0",,,""
hduclass,s,h,"OGIP",,,""
hduclas1,s,h,"EVENTS",,,""
hduclas2,s,h,"ALL",,,""
pix_adj,s,h,"EDSER",,,"Subpixel adjustment algorithm"
rand_sky,r,h,0.0,,,""
subpixfl,s,h,"acisD1999-07-22subpixN0001.fits",,,""
rand_pi,r,h,1.0,,,""
date,s,h,"2022-07-26T13:00:29",,,"Date and time of file creation"
mjd-obs,r,h,59786.054729384,,,"Modified Julian date of observation"
date-obs,s,h,"2022-07-26T01:18:48",,,"Observation start date"
date-end,s,h,"2022-07-26T07:47:00",,,"Observation end date"
timesys,s,h,"TT",,,"Time system"
mjdref,r,h,50814.0,,,"[d] MJD zero point for times"
timezero,r,h,0.0,,,"[s] Clock correction"
timeunit,s,h,"s",,,"Time unit"
btimnull,r,h,771298847.27462,,,"Basic Time offset (s)"
btimrate,r,h,0.25625001607978,,,"Basic Time clock rate (s / VCDUcount)"
btimdrft,r,h,2.5128371605732e-18,,,"Basic Time clock drift (s / VCDUcount^2)"
btimcorr,r,h,0.0,,,"Correction applied to Basic Time rate (s)"
timeref,s,h,"LOCAL",,,"Time reference (barycenter/local)"
tassign,s,h,"SATELLITE",,,"Time assigned by clock"
clockapp,b,h,yes,,,"default"
tierrela,r,h,1.0e-09,,,"default"
tierabso,r,h,5.0e-05,,,"default"
timversn,s,h,"ASC-FITS-2",,,"Timing system definition"
tstart,r,h,775185528.6188,,,"[s] Observation start time (MET)"
tstop,r,h,775208820.20777,,,"[s] Observation end time (MET)"
obs_mode,s,h,"POINTING",,,"Observation mode"
startmjf,i,h,118503,,,"Major frame ctr value at start of data"
startmnf,i,h,32,,,"Start minor frame ctr at start of data"
startobt,r,h,0.0,,,"On-Board MET close to STARTMJF and STARTMNF"
stopmjf,i,h,119175,,,"Major frame ctr value at stop of data"
stopmnf,i,h,45,,,"Stop minor frame ctr at end of data"
timepixr,r,h,0.5,,,"default"
dataclas,s,h,"OBSERVED",,,"default"
radesys,s,h,"ICRS",,,"default"
timedel,r,h,1.74104,,,"[s] timedel Lev1"
mission,s,h,"AXAF",,,"Mission"
telescop,s,h,"CHANDRA",,,"Telescope"
sim_x,r,h,-0.68282252473119,,,"[mm] SIM focus pos"
sim_y,r,h,0.0,,,"[mm] SIM orthogonal axis pos"
sim_z,r,h,-183.98753650695,,,"[mm] SIM translation stage pos"
foc_len,r,h,10070.0,,,"[mm] HRMA focal length"
instrume,s,h,"ACIS",,,"Instrument"
grating,s,h,"HETG",,,"Grating"
detnam,s,h,"ACIS-456789",,,"Detector"
ra_pnt,r,h,289.6995315182,,,"[deg] Pointing RA"
dec_pnt,r,h,-5.2359990918646,,,"[deg] Pointing Dec"
roll_pnt,r,h,224.15044193548,,,"[deg] Pointing Roll"
ra_targ,r,h,289.699458,,,"[deg] Observer's specified target RA"
dec_targ,r,h,-5.238081,,,"[deg] Observer's specified target Dec"
defocus,r,h,0.0014449365687057,,,"[mm] SIM defocus"
ra_nom,r,h,289.6995315182,,,"[deg] Nominal RA"
dec_nom,r,h,-5.2359990918646,,,"[deg] Nominal Dec"
roll_nom,r,h,224.15044193548,,,"[deg] Nominal Roll"
readmode,s,h,"TIMED",,,"Read mode"
acsys1,s,h,"CHIP:AXAF-ACIS-1.0",,,"reference for chip coord system"
acsys2,s,h,"TDET:ACIS-2.2",,,"reference for tiled detector coord system"
acsys3,s,h,"DET:ASC-FP-1.1",,,"reference for focal plane coord system"
acsys4,s,h,"SKY:ASC-FP-1.1",,,"reference for sky coord system"
gainfile,s,h,"acisD2000-01-29gain_ctiN0008.fits",,,""
cti_corr,b,h,yes,,,""
cti_app,s,h,"PPPPPBPBPP",,,""
ctifile,s,h,"acisD2020-01-01ctiN0009.fits",,,""
mtlfile,s,h,"acisf26478_000N001_mtl1.fits",,,""
tgaincor,s,h,"T",,,""
tgainfil,s,h,"acisD2021-11-01t_gain_biN0002.fits",,,""
grd_file,s,h,"acisD1996-11-01gradeN0004.fits",,,""
corners,i,h,2,,,"num adjacent side pix > threshold to include co"
gradesys,s,h,"ASCA",,,"grade system: ASCA, ACIS, or USER"
bpixfile,s,h,"acisf26478_000N001_bpix1.fits",,,""
datamode,s,h,"FAINT",,,"Data mode"
run_id,i,h,1,,,"Science run index"
fsw_vers,i,h,56,,,"ACIS flight software version number"
startbep,i,h,956002464,,,"BEP timer value at TSTART"
stopbep,i,h,3061093928,,,"BEP timer value at TSTOP"
timedela,r,h,1.74104,,,"Inferred duration of primary exposure (s)"
timedelb,r,h,0.0,,,"Inferred duration of secondary exp. (s)"
flshtime,r,h,0.0,,,"[s] "
exptime,r,h,1.7,,,"[s] "
dtycycle,i,h,0,,,""
firstrow,i,h,1,,,"Index of first row of CCD (sub)array readout"
nrows,i,h,512,,,"Number of rows in (sub)array readout"
flshtima,r,h,0.0,,,"Inferred duration of flush before primary fram"
flshtimb,r,h,0.0,,,"Inferred duration of flush before secondary fr"
cycle,s,h,"P",,,"events from which exps? Prim/Second/Both"
histnum,i,h,518,,,""
title,s,h,"Redshifted Inner Disk Atmosphere in the Ultra-Compact Neutron Star X-ray Binary 4U 1916-053",,,"Proposal title"
observer,s,h,"Nicolas Trueba",,,"Principal investigator"
object,s,h,"4U 1916-053",,,"Source name"
ds_ident,s,h,"10.25574/26478",,,"Dataset Identifier: DOI"
obs_id,s,h,"26478",,,"Observation id"
obi_num,i,h,0,,,"Obi number"
seq_num,s,h,"402217",,,"Sequence number"
ontime,r,h,21049.223514199,,,"[s] Sum of GTIs"
ontime7,r,h,21049.223514199,,,"[s] Sum of GTIs"
ontime4,r,h,21049.223514199,,,"[s] Sum of GTIs"
ontime5,r,h,21049.223514199,,,"[s] Sum of GTIs"
ontime6,r,h,21049.223514199,,,"[s] Sum of GTIs"
ontime8,r,h,21049.223544359,,,"[s] Sum of GTIs"
ontime9,r,h,21049.223514199,,,"[s] Sum of GTIs"
livetime,r,h,20553.048737616,,,"[s] Livetime"
livtime7,r,h,20553.048737616,,,"[s] Livetime"
livtime4,r,h,20553.048737616,,,"[s] Livetime"
livtime5,r,h,20553.048737616,,,"[s] Livetime"
livtime6,r,h,20553.048737616,,,"[s] Livetime"
livtime8,r,h,20553.048767065,,,"[s] Livetime"
livtime9,r,h,20553.048737616,,,"[s] Livetime"
exposure,r,h,20553.048737616,,,"[s] Exposure time"
exposur7,r,h,20553.048737616,,,"[s] Exposure time"
exposur4,r,h,20553.048737616,,,"[s] Exposure time"
exposur5,r,h,20553.048737616,,,"[s] Exposure time"
exposur6,r,h,20553.048737616,,,"[s] Exposure time"
exposur8,r,h,20553.048767065,,,"[s] Exposure time"
exposur9,r,h,20553.048737616,,,"[s] Exposure time"
dtcor,r,h,0.97642788218536,,,"Dead time correction"
time_adj,s,h,"NONE",,,"time adjustment algorithm"
asptype,s,h,"KALMAN",,,""
biasfil4,s,h,"acisf775185872N001_0_bias0.fits",,,"bias file used: CCD 4"
biasfil7,s,h,"acisf775185872N001_1_bias0.fits",,,"bias file used: CCD 7"
biasfil5,s,h,"acisf775185872N001_2_bias0.fits",,,"bias file used: CCD 5"
biasfil6,s,h,"acisf775185872N001_3_bias0.fits",,,"bias file used: CCD 6"
biasfil8,s,h,"acisf775185872N001_4_bias0.fits",,,"bias file used: CCD 8"
biasfil9,s,h,"acisf775185872N001_5_bias0.fits",,,"bias file used: CCD 9"
fp_temp,r,h,157.64176941,,,"[K] Focal Plane Temperature"
aimpfile,s,h,"telD1999-07-23aimptsN0002.fits",,,""
geomfile,s,h,"telD1999-07-23geomN0007.fits",,,""
skyfile,s,h,"telD1999-07-23skyN0002.fits",,,""
tdetfile,s,h,"telD1999-07-23tdetN0001.fits",,,""
shellfil,s,h,"telD1999-07-23sgeomN0001.fits",,,""
fltfile,s,h,"acisf26478_000N001_flt1.fits",,,""
maskfile,s,h,"acisf26478_000N001_msk1.fits",,,""
pbkfile,s,h,"acisf775186740N001_pbk0.fits",,,""
dy_avg,r,h,0.0,,,"[mm] Mean DY during observation"
dz_avg,r,h,0.0,,,"[mm] Mean DZ during observation"
dth_avg,r,h,0.0,,,"[deg] Mean DTHETA during observation"
oclkpair,i,h,8,,,"# of pairs of overclock pixels per output"
orc_mode,i,h,0,,,"Output register clocking mode"
sum_2x2,i,h,0,,,"On-chip summing. 0:None; 1:Sum 2x2"
fep_ccd,s,h,"475689",,,"CCD to FEPID mapping, fep0 is left most digit"
caldbver,s,h,"4.10.0",,,""