ASTROSAT CZTI

Data Quality Report

Orbit 56156

Creation date: 2026-02-13T16:15:50.426545
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_083T04_9000006550_56156cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56156cztM0_level2_quad_clean.evt
Size (bytes)392,040,00096,030,720
Size373.9 MB 91.6 MB
Events in quadrant A3,489,281624,440
Events in quadrant B3,168,499679,192
Events in quadrant C2,931,171606,009
Events in quadrant D4,426,632552,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146631
B0138301
C0134301
D0176631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63801582.476489%
B63801011.583072%
C6381671.049992%
D63812463.855195%

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 7450 6381 79 79 1.06% 1.24%
B 7450 6381 14 14 0.19% 0.22%
C 7451 6382 11 11 0.15% 0.17%
D 7451 6382 152 152 2.04% 2.38%

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 7 64 260382 1510.93 697 681 171.9
A 15 32 170389 987.35 697 681 171.9
A 3 14 94926 548.31 697 681 171.9
B 10 247 76347 509.33 694 669 148.6
B 1 255 71950 479.74 694 669 148.6
B 5 185 58301 387.87 694 669 148.6
C 12 252 68352 361.41 686 678 187.3
C 13 3 65357 345.41 686 678 187.3
C 12 249 37960 199.1 686 678 187.3
D 8 240 537376 2814.66 675 645 190.7
D 8 160 441210 2310.36 675 645 190.7
D 2 249 197133 1030.4 675 645 190.7

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