ASTROSAT CZTI

Data Quality Report

Orbit 58528

Creation date: 2026-07-23T10:52:32.426330
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_044T04_9000006592_58528cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58528cztM0_level2_quad_clean.evt
Size (bytes)473,351,04091,944,000
Size451.4 MB 87.7 MB
Events in quadrant A3,203,701619,644
Events in quadrant B3,519,975666,296
Events in quadrant C5,266,925544,244
Events in quadrant D5,037,322509,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136982
B0146462
C0201102
D0195652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6356630.991189%
B63561161.825047%
C635669310.903084%
D63575799.108070%

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 8971 6553 16 16 0.18% 0.24%
B 8971 6552 34 34 0.38% 0.52%
C 8971 6543 606 606 6.76% 9.26%
D 8972 6552 549 549 6.12% 8.38%

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 245296 1369.74 718 701 178.6
A 10 17 46945 258.97 718 701 178.6
A 10 251 26306 143.39 718 701 178.6
B 0 171 240107 1550.71 716 690 154.4
B 8 234 182427 1177.11 716 690 154.4
B 2 249 47978 306.28 716 690 154.4
C 5 10 1479365 7944.14 671 664 186.1
C 4 5 694941 3729.92 671 664 186.1
C 12 252 139624 746.55 671 664 186.1
D 2 249 1023269 5417.41 661 630 188.8
D 3 12 401135 2121.67 661 630 188.8
D 2 31 375122 1983.87 661 630 188.8

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