ASTROSAT CZTI

Data Quality Report

Orbit 56517

Creation date: 2026-03-10T01:16:23.870110
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_060T01_9000006556_56517cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56517cztM0_level2_quad_clean.evt
Size (bytes)639,083,52086,541,120
Size609.5 MB 82.5 MB
Events in quadrant A6,362,945543,546
Events in quadrant B3,982,701647,666
Events in quadrant C6,915,567462,401
Events in quadrant D5,891,983513,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234431
B0162701
C0252121
D0219731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649984913.063548%
B65002183.353846%
C6500150023.076923%
D65006479.953846%

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 7439 6499 819 819 11.01% 12.60%
B 7440 6500 131 131 1.76% 2.02%
C 7440 6501 1532 1532 20.59% 23.57%
D 7440 6500 633 633 8.51% 9.74%

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 2315459 13991.43 665 649 165.4
A 4 95 1003589 6062.08 665 649 165.4
A 0 8 211098 1272.02 665 649 165.4
B 4 206 766274 5182.91 688 664 147.7
B 3 145 104430 702.46 688 664 147.7
B 10 247 103588 696.76 688 664 147.7
C 15 230 3932288 23571.91 604 599 166.8
C 12 252 247966 1483.06 604 599 166.8
C 14 254 204564 1222.84 604 599 166.8
D 7 96 1896230 10252.24 646 615 184.9
D 2 249 527277 2848.4 646 615 184.9
D 11 176 252858 1364.23 646 615 184.9

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