ASTROSAT CZTI

Data Quality Report

Orbit 53918

Creation date: 2025-09-16T11:00:09.984967
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_057T04_9000006508_53918cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53918cztM0_level2_quad_clean.evt
Size (bytes)531,054,72082,442,880
Size506.5 MB 78.6 MB
Events in quadrant A2,827,187618,990
Events in quadrant B3,711,180635,553
Events in quadrant C4,400,531533,493
Events in quadrant D8,229,079270,002

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130071
B0154151
C0175961
D0287851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283250.397899%
B62842383.787397%
C62835739.119847%
D6283335153.334394%

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 7338 6283 7 7 0.10% 0.11%
B 7339 6285 171 171 2.33% 2.72%
C 7338 6284 554 554 7.55% 8.82%
D 7338 6284 1576 1576 21.48% 25.08%

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 0 8 44694 264.09 677 663 166.7
A 4 3 29058 170.31 677 663 166.7
A 15 174 25305 147.8 677 663 166.7
B 0 213 381457 2673.11 664 639 142.5
B 5 236 269453 1886.91 664 639 142.5
B 5 185 174842 1222.8 664 639 142.5
C 13 3 1310935 7629.44 613 608 171.7
C 1 241 358251 2082.39 613 608 171.7
C 15 164 76711 443.11 613 608 171.7
D 8 176 5894773 52284.44 392 374 112.7
D 3 12 295877 2621.17 392 374 112.7
D 3 224 127716 1129.55 392 374 112.7

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