ASTROSAT CZTI

Data Quality Report

Orbit 55456

Creation date: 2025-12-29T09:43:48.488077
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_099T01_9000006536_55456cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55456cztM0_level2_quad_clean.evt
Size (bytes)799,560,00082,874,880
Size762.5 MB 79.0 MB
Events in quadrant A3,218,279647,104
Events in quadrant B4,899,800648,264
Events in quadrant C4,621,946601,704
Events in quadrant D16,315,616126,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01442
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014795115
B019939450
C018906142
D054152963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6997680.971845%
B69706299.024390%
C69863354.795305%
D6944567581.725230%

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 8680 7023 11 11 0.13% 0.16%
B 8681 6987 418 418 4.82% 5.98%
C 8679 7008 241 241 2.78% 3.44%
D 8682 6945 5469 5469 62.99% 78.75%

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 78 162954 890.11 743 725 182.3
A 4 159 70983 385.49 743 725 182.3
A 12 115 27576 147.33 743 725 182.3
B 5 236 1495438 9729.16 714 687 153.6
B 0 171 455897 2962.91 714 687 153.6
B 2 249 45913 294.37 714 687 153.6
C 13 3 1452220 7498.47 708 699 193.6
C 1 16 223639 1151.69 708 699 193.6
C 12 252 70644 361.33 708 699 193.6
D 2 62 13684491 112349.94 427 406 121.8
D 3 12 354470 2906.96 427 406 121.8
D 11 129 178964 1466.01 427 406 121.8

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