ASTROSAT CZTI

Data Quality Report

Orbit 55693

Creation date: 2026-01-13T15:33:37.494474
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_099T04_9000006540_55693cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55693cztM0_level2_quad_clean.evt
Size (bytes)447,742,08095,950,080
Size427.0 MB 91.5 MB
Events in quadrant A3,790,136619,920
Events in quadrant B3,599,635676,537
Events in quadrant C3,718,252620,399
Events in quadrant D4,960,651535,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159923
B0153392
C0156592
D0194442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64992563.939068%
B64992053.154331%
C6499861.323281%
D64995879.032159%

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 7664 6500 186 186 2.43% 2.86%
B 7664 6499 71 71 0.93% 1.09%
C 7664 6500 59 59 0.77% 0.91%
D 7664 6500 514 514 6.71% 7.91%

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 479740 2797.26 701 682 171.3
A 0 8 405066 2361.23 701 682 171.3
A 8 249 41829 240.26 701 682 171.3
B 5 236 601888 4012.37 694 668 149.8
B 7 252 122628 813.93 694 668 149.8
B 4 206 40455 265.53 694 668 149.8
C 9 38 568871 3005.02 688 683 189.1
C 13 3 155422 818.38 688 683 189.1
C 15 147 95350 500.67 688 683 189.1
D 11 129 2123152 11425.87 652 623 185.8
D 2 62 111964 599.36 652 623 185.8
D 7 129 68851 367.28 652 623 185.8

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