ASTROSAT CZTI

Data Quality Report

Orbit 57073

Creation date: 2026-04-16T08:51:48.392798
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_083T10_9000006566_57073cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57073cztM0_level2_quad_clean.evt
Size (bytes)998,179,200162,512,640
Size951.9 MB 155.0 MB
Events in quadrant A5,644,8121,140,942
Events in quadrant B6,870,1741,168,479
Events in quadrant C11,982,646919,606
Events in quadrant D11,559,308893,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250473
B0283733
C0435363
D0421663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115321841.595560%
B115316575.697685%
C11531214918.636718%
D11531154213.372648%

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 13862 11533 131 131 0.95% 1.14%
B 13861 11532 376 376 2.71% 3.26%
C 13861 11532 1894 1894 13.66% 16.42%
D 13861 11531 1638 1638 11.82% 14.21%

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 7 64 378963 1205.14 1270 1237 313.4
A 4 13 110754 349.42 1270 1237 313.4
A 3 14 97409 306.84 1270 1237 313.4
B 10 16 1415271 5527.12 1215 1171 255.8
B 0 63 135586 525.37 1215 1171 255.8
B 10 32 103163 398.64 1215 1171 255.8
C 12 254 2911656 9308.74 1151 1140 312.7
C 1 16 1768999 5654.16 1151 1140 312.7
C 15 198 1653594 5285.06 1151 1140 312.7
D 12 33 3294984 10104.94 1147 1091 326.0
D 15 142 3217919 9868.52 1147 1091 326.0
D 7 96 102310 310.52 1147 1091 326.0

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