ASTROSAT CZTI

Data Quality Report

Orbit 57191

Creation date: 2026-04-24T07:08:22.323953
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_9000006568_57191cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57191cztM0_level2_quad_clean.evt
Size (bytes)450,204,48085,916,160
Size429.3 MB 81.9 MB
Events in quadrant A2,829,797568,242
Events in quadrant B4,378,056573,685
Events in quadrant C5,084,778507,243
Events in quadrant D3,864,024496,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134482
B0176302
C0196232
D0161112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534410.627487%
B65336089.306597%
C65335558.495331%
D65341392.127334%

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 9136 6818 23 23 0.25% 0.34%
B 9135 6817 428 428 4.69% 6.28%
C 9135 6816 487 487 5.33% 7.14%
D 9136 6818 123 123 1.35% 1.80%

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 13 248 61958 355.26 693 677 172.5
A 3 14 40501 230.87 693 677 172.5
A 4 3 20754 116.39 693 677 172.5
B 5 185 824504 5853.08 660 635 140.8
B 10 16 538659 3822.33 660 635 140.8
B 0 155 91398 644.82 660 635 140.8
C 15 224 1437683 8132.5 647 640 176.7
C 12 252 735968 4161.36 647 640 176.7
C 14 67 172185 970.81 647 640 176.7
D 12 33 625791 3329.48 662 632 187.8
D 7 96 190706 1012.3 662 632 187.8
D 8 240 141343 749.4 662 632 187.8

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