ASTROSAT CZTI

Data Quality Report

Orbit 54865

Creation date: 2025-11-19T11:10:50.639083
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_039T06_9000006526_54865cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54865cztM0_level2_quad_clean.evt
Size (bytes)447,779,52096,145,920
Size427.0 MB 91.7 MB
Events in quadrant A3,486,317637,423
Events in quadrant B3,148,321691,962
Events in quadrant C4,177,677592,067
Events in quadrant D5,256,997536,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149643
B0139422
C0168992
D0200692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65032183.352299%
B65031241.906812%
C65033335.120714%
D65046399.824723%

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 7598 6503 109 109 1.43% 1.68%
B 7598 6503 29 29 0.38% 0.45%
C 7598 6503 246 246 3.24% 3.78%
D 7598 6503 539 539 7.09% 8.29%

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 13 248 427555 2368.76 729 711 180.2
A 0 8 175163 968.12 729 711 180.2
A 3 14 18533 98.9 729 711 180.2
B 5 185 120691 776.28 717 690 154.6
B 10 247 79538 510.07 717 690 154.6
B 7 252 27837 175.61 717 690 154.6
C 4 5 608062 3196.26 697 690 190.0
C 12 252 337256 1771.16 697 690 190.0
C 14 254 160945 843.33 697 690 190.0
D 12 6 1170052 5989.29 689 660 195.2
D 11 176 403436 2062.9 689 660 195.2
D 10 181 213977 1092.55 689 660 195.2

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