ASTROSAT CZTI

Data Quality Report

Orbit 55122

Creation date: 2025-12-06T04:36:40.567800
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_022T16_9000006532_55122cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55122cztM0_level2_quad_clean.evt
Size (bytes)399,476,16090,388,800
Size381.0 MB 86.2 MB
Events in quadrant A2,780,968595,214
Events in quadrant B2,792,524636,766
Events in quadrant C3,163,038561,476
Events in quadrant D5,555,821499,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131221
B0130951
C0140931
D0209441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360350.550314%
B6361490.770319%
C6360891.399371%
D63605638.852201%

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 7270 6360 8 8 0.11% 0.13%
B 7271 6362 4 4 0.06% 0.06%
C 7270 6361 43 43 0.59% 0.68%
D 7270 6361 491 491 6.75% 7.72%

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 0 8 53282 317.21 664 648 165.9
A 12 115 34689 205.15 664 648 165.9
A 7 237 26447 155.48 664 648 165.9
B 0 63 63337 442.18 658 633 141.8
B 5 172 51233 356.82 658 633 141.8
B 5 185 27620 190.3 658 633 141.8
C 13 3 189656 1067.71 645 638 177.0
C 14 254 127636 717.38 645 638 177.0
C 9 38 100659 564.99 645 638 177.0
D 11 129 2244770 12744.13 621 594 176.1
D 3 12 268087 1519.03 621 594 176.1
D 15 94 132470 748.89 621 594 176.1

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