ASTROSAT CZTI

Data Quality Report

Orbit 57093

Creation date: 2026-04-17T18:40:21.990990
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_083T10_9000006566_57093cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57093cztM0_level2_quad_clean.evt
Size (bytes)617,227,200104,391,360
Size588.6 MB 99.6 MB
Events in quadrant A6,786,594616,084
Events in quadrant B3,440,659763,030
Events in quadrant C3,842,031676,578
Events in quadrant D8,199,168584,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253810
B0155680
C0167930
D0294771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7471105414.107884%
B7471370.495248%
C74721011.351713%
D747178710.534065%

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 7471 7471 854 854 11.43% 11.43%
B 7471 7471 6 6 0.08% 0.08%
C 7472 7472 86 86 1.15% 1.15%
D 7471 7471 847 847 11.34% 11.34%

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 4 13 3597833 19000.1 767 747 189.3
A 5 113 83558 437.41 767 747 189.3
A 13 248 56670 295.39 767 747 189.3
B 4 171 94078 538.91 799 770 173.1
B 7 252 28251 158.72 799 770 173.1
B 10 247 24433 136.67 799 770 173.1
C 14 245 164881 762.94 788 780 215.1
C 12 252 163060 754.47 788 780 215.1
C 14 254 162953 753.98 788 780 215.1
D 15 142 2677487 12572.37 757 722 212.9
D 12 33 2201527 10336.86 757 722 212.9
D 7 96 83003 386.46 757 722 212.9

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