ASTROSAT CZTI

Data Quality Report

Orbit 56357

Creation date: 2026-02-27T06:20:33.738840
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_083T05_9000006554_56357cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56357cztM0_level2_quad_clean.evt
Size (bytes)1,105,807,68051,243,840
Size1.0 GB 48.9 MB
Events in quadrant A13,454,371168,748
Events in quadrant B6,186,212477,010
Events in quadrant C4,407,915465,379
Events in quadrant D16,398,753191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442741
B0228131
C0176562
D0528831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6299452171.773297%
B6300118118.746032%
C62994867.715510%
D62996299100.000000%

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 7517 6446 4342 4342 57.76% 67.36%
B 7519 6576 956 956 12.71% 14.54%
C 7518 6574 458 458 6.09% 6.97%
D 7517 6358 6172 6172 82.11% 97.07%

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 3 10097100 92318.75 426 416 109.4
A 12 194 1195266 10925.08 426 416 109.4
A 4 95 120812 1100.84 426 416 109.4
B 4 206 1850317 14323.53 600 579 129.1
B 5 172 1509808 11686.78 600 579 129.1
B 4 171 99981 769.72 600 579 129.1
C 15 230 1251787 7361.7 614 609 170.0
C 12 252 331754 1948.39 614 609 170.0
C 13 3 149978 878.86 614 609 170.0
D 8 129 15851132 746232.05 66 62 21.2
D 8 113 125205 5891.45 66 62 21.2
D 6 239 64625 3039.48 66 62 21.2

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