ASTROSAT CZTI

Data Quality Report

Orbit 57481

Creation date: 2026-05-13T19:15:44.756466
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_113T09_9000006574_57481cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57481cztM0_level2_quad_clean.evt
Size (bytes)474,278,40095,394,240
Size452.3 MB 91.0 MB
Events in quadrant A2,951,056647,377
Events in quadrant B3,782,447671,750
Events in quadrant C5,111,006583,856
Events in quadrant D5,210,601535,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134481
B0155371
C0197271
D0198221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6445931.442979%
B64462724.219671%
C64465127.942910%
D644666510.316475%

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 7550 6445 11 11 0.15% 0.17%
B 7551 6446 101 101 1.34% 1.57%
C 7551 6446 421 421 5.58% 6.53%
D 7551 6446 593 593 7.85% 9.20%

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 10 251 102331 563.43 727 707 180.4
A 13 153 14278 75.24 727 707 180.4
A 4 3 10691 55.35 727 707 180.4
B 4 206 474571 3226.94 696 671 146.9
B 2 249 210421 1428.25 696 671 146.9
B 5 185 90956 614.78 696 671 146.9
C 15 224 1999934 10958.22 671 665 182.4
C 14 254 182599 997.2 671 665 182.4
C 12 2 133260 726.77 671 665 182.4
D 15 142 940987 4890.92 680 650 192.3
D 7 96 924368 4804.48 680 650 192.3
D 2 249 328686 1706.2 680 650 192.3

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