ASTROSAT CZTI

Data Quality Report

Orbit 59282

Creation date: 2026-09-11T23:14:36.652217
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_59282cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59282cztM0_level2_quad_clean.evt
Size (bytes)710,078,40072,236,160
Size677.2 MB 68.9 MB
Events in quadrant A3,142,347609,069
Events in quadrant B3,385,147656,685
Events in quadrant C6,394,070424,162
Events in quadrant D12,901,43682,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135341
B0142351
C0230711
D0424375

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59321242.090357%
B59331682.831620%
C5933174829.462329%
D5932524388.385030%

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 7097 5933 55 55 0.77% 0.93%
B 7098 5934 60 60 0.85% 1.01%
C 7098 5933 1191 1191 16.78% 20.07%
D 7096 5931 4333 4333 61.06% 73.06%

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 7 64 160590 987.01 651 632 162.1
A 4 13 138800 852.55 651 632 162.1
A 14 238 119093 730.95 651 632 162.1
B 5 185 279052 2063.46 646 624 134.9
B 10 31 187971 1388.45 646 624 134.9
B 4 236 93852 690.92 646 624 134.9
C 15 198 3916270 26428.69 533 529 148.2
C 3 233 91217 612.08 533 529 148.2
C 12 252 71324 477.82 533 529 148.2
D 12 110 10448556 82231.71 436 415 127.1
D 11 129 345917 2719.26 436 415 127.1
D 2 249 181062 1421.78 436 415 127.1

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