ASTROSAT CZTI

Data Quality Report

Orbit 56168

Creation date: 2026-02-14T13:32:50.029912
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_56168cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56168cztM0_level2_quad_clean.evt
Size (bytes)534,948,48096,266,880
Size510.2 MB 91.8 MB
Events in quadrant A7,461,707580,117
Events in quadrant B3,440,100692,570
Events in quadrant C3,703,038600,108
Events in quadrant D4,662,354561,681

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269302
B0148952
C0162502
D0186652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A689399814.478456%
B68931291.871464%
C68932583.742928%
D68932373.438271%

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 7782 6893 806 806 10.36% 11.69%
B 7782 6893 13 13 0.17% 0.19%
C 7782 6893 161 161 2.07% 2.34%
D 7782 6893 180 180 2.31% 2.61%

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 12 115 3161566 18058.2 704 686 175.0
A 9 250 629478 3592.31 704 686 175.0
A 14 235 262815 1497.55 704 686 175.0
B 5 185 192357 1228.32 733 707 156.0
B 5 172 74679 474.1 733 707 156.0
B 7 0 51326 324.43 733 707 156.0
C 12 254 752775 3861.22 717 710 194.8
C 6 223 99760 508.54 717 710 194.8
C 12 252 43353 218.94 717 710 194.8
D 8 129 586572 2947.34 712 681 198.8
D 2 249 258210 1295.51 712 681 198.8
D 11 129 234328 1175.37 712 681 198.8

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