ASTROSAT CZTI

Data Quality Report

Orbit 59387

Creation date: 2026-09-19T01:11:44.155836
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_033T01_9000006608_59387cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59387cztM0_level2_quad_clean.evt
Size (bytes)521,867,520100,051,200
Size497.7 MB 95.4 MB
Events in quadrant A3,188,545672,558
Events in quadrant B3,770,362722,113
Events in quadrant C3,619,255647,403
Events in quadrant D8,206,104508,796

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145832
B0160062
C0157042
D0291032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6867941.368866%
B68672303.349352%
C68671642.388234%
D6867130018.931120%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7717 6867 27 27 0.35% 0.39%
B 7717 6867 106 106 1.37% 1.54%
C 7717 6867 118 118 1.53% 1.72%
D 7717 6867 1350 1350 17.49% 19.66%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 251 120843 645.28 760 739 186.1
A 14 238 68602 364.61 760 739 186.1
A 3 245 42259 223.07 760 739 186.1
B 5 236 432101 2681.06 752 722 160.9
B 5 185 90171 555.93 752 722 160.9
B 4 236 63217 388.41 752 722 160.9
C 6 223 552060 2701.88 747 742 204.0
C 2 12 49300 237.97 747 742 204.0
C 12 252 32341 154.86 747 742 204.0
D 12 110 5125187 25937.49 699 668 197.6
D 12 2 100898 507.31 699 668 197.6
D 12 248 51510 257.33 699 668 197.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct