ASTROSAT CZTI

Data Quality Report

Orbit 57847

Creation date: 2026-06-07T10:25:30.143088
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_125T11_9000006582_57847cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57847cztM0_level2_quad_clean.evt
Size (bytes)614,753,28092,508,480
Size586.3 MB 88.2 MB
Events in quadrant A3,367,499638,645
Events in quadrant B3,739,725662,570
Events in quadrant C11,371,752413,692
Events in quadrant D3,675,465547,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159792
B0168772
C0392202
D0167462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77431171.511042%
B77442272.931302%
C7744258833.419421%
D77441191.536674%

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 9497 8019 0 0 0.00% 0.00%
B 9498 8020 25 25 0.26% 0.31%
C 9498 7983 2159 2159 22.73% 27.04%
D 9498 8020 19 19 0.20% 0.24%

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 3 14 74347 359.16 835 814 204.7
A 3 128 48491 232.87 835 814 204.7
A 3 137 10234 46.01 835 814 204.7
B 2 249 171450 972.87 826 795 175.4
B 5 185 61070 343.62 826 795 175.4
B 4 158 28179 156.11 826 795 175.4
C 9 38 6794400 36831.33 689 682 184.5
C 15 224 1690968 9163.68 689 682 184.5
C 15 208 59531 319.04 689 682 184.5
D 5 32 125619 549.01 808 770 227.4
D 3 12 84209 366.92 808 770 227.4
D 2 249 53220 230.64 808 770 227.4

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