ASTROSAT CZTI

Data Quality Report

Orbit 59326

Creation date: 2026-09-14T22:11:12.180904
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_021T06_9000006606_59326cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59326cztM0_level2_quad_clean.evt
Size (bytes)411,785,28095,834,880
Size392.7 MB 91.4 MB
Events in quadrant A3,555,163644,139
Events in quadrant B5,011,056644,455
Events in quadrant C2,884,497609,749
Events in quadrant D3,305,614567,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148861
B0190321
C0131211
D0140821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62491782.848456%
B624971211.393823%
C6249981.568251%
D62491552.480397%

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 7404 6250 90 90 1.22% 1.44%
B 7404 6250 504 504 6.81% 8.06%
C 7404 6250 12 12 0.16% 0.19%
D 7404 6250 64 64 0.86% 1.02%

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 0 494522 2880.93 698 681 171.4
A 7 64 265925 1547.36 698 681 171.4
A 10 251 25183 142.94 698 681 171.4
B 4 236 1358667 9560.36 670 645 142.0
B 4 171 359255 2524.58 670 645 142.0
B 5 236 260321 1828.09 670 645 142.0
C 15 200 76357 407.41 680 671 185.8
C 14 254 59958 319.13 680 671 185.8
C 4 5 31591 166.44 680 671 185.8
D 3 12 261308 1344.94 676 646 193.8
D 12 2 216085 1111.6 676 646 193.8
D 5 173 35807 181.42 676 646 193.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct