ASTROSAT CZTI

Data Quality Report

Orbit 53794

Creation date: 2025-09-07T18:30:18.175129
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_022T04_9000006506_53794cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53794cztM0_level2_quad_clean.evt
Size (bytes)985,343,04073,402,560
Size939.7 MB 70.0 MB
Events in quadrant A17,597,78130,631
Events in quadrant B3,869,575685,753
Events in quadrant C5,766,743579,054
Events in quadrant D8,701,305441,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570845
B0164270
C0220630
D0306960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6957667495.932155%
B69581492.141420%
C69585948.536936%
D6958187126.889911%

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 6957 6957 6357 6357 91.38% 91.38%
B 6958 6958 96 96 1.38% 1.38%
C 6958 6958 475 475 6.83% 6.83%
D 6958 6958 1584 1584 22.77% 22.77%

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 63 16167107 239156.78 268 261 67.6
A 8 249 87668 1293.02 268 261 67.6
A 0 8 84213 1241.91 268 261 67.6
B 8 234 359112 2291.16 719 694 156.4
B 5 185 183796 1170.47 719 694 156.4
B 7 0 149820 953.28 719 694 156.4
C 15 224 2647761 14048.04 683 679 188.4
C 12 2 107934 569.2 683 679 188.4
C 15 158 90161 474.88 683 679 188.4
D 8 176 4307508 24866.34 603 577 173.2
D 1 241 1009848 5827.09 603 577 173.2
D 3 12 246857 1421.91 603 577 173.2

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