ASTROSAT CZTI

Data Quality Report

Orbit 57573

Creation date: 2026-05-20T00:23:19.583440
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_070T08_9000006576_57573cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57573cztM0_level2_quad_clean.evt
Size (bytes)517,777,92088,053,120
Size493.8 MB 84.0 MB
Events in quadrant A3,114,204571,920
Events in quadrant B3,579,780602,227
Events in quadrant C7,622,768465,373
Events in quadrant D4,285,557520,603

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148240
B0158370
C0278110
D0178780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7259110.151536%
B7260710.977961%
C7260126017.355372%
D72591381.901088%

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 7549 7549 0 0 0.00% 0.00%
B 7550 7550 27 27 0.36% 0.36%
C 7550 7550 897 897 11.88% 11.88%
D 7549 7549 129 129 1.71% 1.71%

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 30212 153.83 781 762 191.4
A 3 14 26341 133.61 781 762 191.4
A 3 245 18766 94.04 781 762 191.4
B 10 247 102122 618.62 765 734 163.9
B 0 245 83412 504.46 765 734 163.9
B 7 252 65108 392.78 765 734 163.9
C 12 254 2996019 15962.19 688 679 187.7
C 15 224 1234252 6573.72 688 679 187.7
C 14 254 443538 2360.0 688 679 187.7
D 2 249 644873 3027.39 747 712 212.8
D 3 12 169387 792.73 747 712 212.8
D 15 142 133442 623.8 747 712 212.8

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