ASTROSAT CZTI

Data Quality Report

Orbit 56203

Creation date: 2026-02-16T20:26:32.520998
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_083T04_9000006550_56203cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56203cztM0_level2_quad_clean.evt
Size (bytes)633,415,68090,547,200
Size604.1 MB 86.4 MB
Events in quadrant A7,934,614533,176
Events in quadrant B3,986,982665,787
Events in quadrant C4,695,638575,037
Events in quadrant D6,328,082515,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280501
B0163471
C0187431
D0232151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476131020.228536%
B64763114.802347%
C64774987.688745%
D647773311.316968%

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 7501 6476 1012 1012 13.49% 15.63%
B 7501 6476 121 121 1.61% 1.87%
C 7502 6477 373 373 4.97% 5.76%
D 7502 6477 668 668 8.90% 10.31%

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 32 1721268 10544.48 654 637 163.2
A 8 176 1483898 9089.81 654 637 163.2
A 12 115 876556 5367.86 654 637 163.2
B 5 185 509050 3462.07 688 663 146.8
B 4 171 451631 3071.06 688 663 146.8
B 0 63 70738 477.21 688 663 146.8
C 12 254 1569680 8659.18 662 656 181.2
C 12 252 248136 1365.8 662 656 181.2
C 6 223 147675 811.37 662 656 181.2
D 11 129 2597920 13969.6 653 622 185.9
D 6 239 189879 1017.92 653 622 185.9
D 8 129 171926 921.36 653 622 185.9

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