ASTROSAT CZTI

Data Quality Report

Orbit 58777

Creation date: 2026-08-09T14:11:56.299436
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_106T01_9000006596_58777cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58777cztM0_level2_quad_clean.evt
Size (bytes)675,492,48073,304,640
Size644.2 MB 69.9 MB
Events in quadrant A2,984,627593,904
Events in quadrant B3,796,433622,982
Events in quadrant C3,786,395536,610
Events in quadrant D13,964,45841,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013771519
B016040548
C016243680
D0490323648

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01328
B01328
C01328
D01322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6129781.272638%
B61301863.034258%
C61073425.600131%
D5900555994.220339%

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 7331 6246 24 24 0.33% 0.38%
B 7330 6247 82 82 1.12% 1.31%
C 7328 6226 224 224 3.06% 3.60%
D 7273 5956 5042 5042 69.32% 84.65%

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 15 233 119771 705.76 679 660 168.8
A 2 143 60489 354.5 679 660 168.8
A 10 251 48772 285.08 679 660 168.8
B 0 171 314570 2197.87 668 645 142.8
B 8 234 293169 2048.03 668 645 142.8
B 4 236 130950 912.3 668 645 142.8
C 13 3 679535 3848.35 641 636 176.4
C 6 223 184442 1041.91 641 636 176.4
C 9 38 182719 1032.14 641 636 176.4
D 12 110 8709701 83524.15 362 346 104.3
D 11 129 3375433 32367.64 362 346 104.3
D 2 249 166539 1593.81 362 346 104.3

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