ASTROSAT CZTI

Data Quality Report

Orbit 53514

Creation date: 2025-08-19T20:31:50.363663
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_004T04_9000006500_53514cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53514cztM0_level2_quad_clean.evt
Size (bytes)790,531,20082,676,160
Size753.9 MB 78.8 MB
Events in quadrant A8,176,067543,473
Events in quadrant B4,979,394661,595
Events in quadrant C11,897,871283,754
Events in quadrant D3,725,912577,802

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286511
B0191321
C0395898
D0151921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6251141222.588386%
B62514777.630779%
C6250364358.288000%
D62501692.704000%

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 7386 6252 1147 1147 15.53% 18.35%
B 7386 6252 161 161 2.18% 2.58%
C 7385 6251 3109 3109 42.10% 49.74%
D 7385 6251 52 52 0.70% 0.83%

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 3 62 3827996 23363.41 658 642 163.8
A 15 174 1084449 6615.91 658 642 163.8
A 3 63 627584 3827.06 658 642 163.8
B 2 249 791721 5441.17 684 662 145.4
B 4 171 785569 5398.86 684 662 145.4
B 10 254 175018 1199.28 684 662 145.4
C 7 64 5632031 43916.48 465 461 128.2
C 1 241 2455936 19148.45 465 461 128.2
C 15 224 1133759 8837.76 465 461 128.2
D 2 153 264743 1317.29 698 666 200.5
D 2 120 222031 1104.23 698 666 200.5
D 3 12 101643 503.7 698 666 200.5

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