ASTROSAT CZTI

Data Quality Report

Orbit 56083

Creation date: 2026-02-09T21:13:55.064698
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_083T03_9000006548_56083cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56083cztM0_level2_quad_clean.evt
Size (bytes)392,690,88086,906,880
Size374.5 MB 82.9 MB
Events in quadrant A4,892,900540,158
Events in quadrant B2,657,023617,254
Events in quadrant C2,697,064550,941
Events in quadrant D3,827,386508,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185581
B0122121
C0125571
D0154541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59335399.084780%
B5933510.859599%
C5933550.927018%
D59331692.848475%

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 6988 5934 549 549 7.86% 9.25%
B 6988 5934 6 6 0.09% 0.10%
C 6988 5934 12 12 0.17% 0.20%
D 6988 5934 149 149 2.13% 2.51%

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 12 115 1253092 8083.74 623 606 154.9
A 7 64 864046 5572.78 623 606 154.9
A 15 32 272518 1754.96 623 606 154.9
B 10 247 36974 267.11 629 606 136.2
B 0 231 30831 221.99 629 606 136.2
B 0 213 24868 178.2 629 606 136.2
C 12 252 214407 1254.53 616 609 170.4
C 15 165 38836 224.31 616 609 170.4
C 12 249 10702 59.22 616 609 170.4
D 11 129 407874 2303.43 614 584 176.8
D 2 249 383658 2166.48 614 584 176.8
D 8 240 193991 1093.81 614 584 176.8

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