ASTROSAT CZTI

Data Quality Report

Orbit 56362

Creation date: 2026-02-28T12:14:57.474083
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_56362cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56362cztM0_level2_quad_clean.evt
Size (bytes)1,114,208,64061,951,680
Size1.0 GB 59.1 MB
Events in quadrant A13,487,060337,107
Events in quadrant B6,012,135544,932
Events in quadrant C5,801,120489,602
Events in quadrant D15,501,91096,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440021
B0217692
C0212761
D0498831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5741490385.403240%
B5740134523.432056%
C5741112519.595889%
D57415741100.000000%

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 6885 5740 4738 4738 68.82% 82.54%
B 6885 5740 970 970 14.09% 16.90%
C 6886 5741 993 993 14.42% 17.30%
D 6885 5740 5693 5693 82.69% 99.18%

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 9151054 94854.16 381 371 96.5
A 12 194 1044145 10819.55 381 371 96.5
A 8 26 518922 5375.19 381 371 96.5
B 4 206 3197990 27227.69 555 536 117.4
B 5 185 295084 2508.2 555 536 117.4
B 0 63 57647 486.32 555 536 117.4
C 15 230 2685074 17308.74 561 553 155.1
C 13 3 373128 2402.21 561 553 155.1
C 12 254 275623 1773.54 561 553 155.1
D 8 129 14442901 373580.2 131 125 38.7
D 6 239 243543 6296.31 131 125 38.7
D 2 249 133470 3449.13 131 125 38.7

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