ASTROSAT CZTI

Data Quality Report

Orbit 57108

Creation date: 2026-04-18T18:09:56.191443
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_57108cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57108cztM0_level2_quad_clean.evt
Size (bytes)639,365,760100,857,600
Size609.7 MB 96.2 MB
Events in quadrant A3,252,592718,353
Events in quadrant B7,672,052581,347
Events in quadrant C5,363,339594,663
Events in quadrant D6,796,161637,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152860
B0281820
C0214050
D0253470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7507130.173172%
B7508191225.466169%
C7508110914.770911%
D75082903.862547%

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 7507 7507 6 6 0.08% 0.08%
B 7508 7508 1563 1563 20.82% 20.82%
C 7508 7508 616 616 8.20% 8.20%
D 7508 7508 292 292 3.89% 3.89%

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 10 251 55219 269.9 819 796 201.6
A 13 254 13344 62.23 819 796 201.6
A 3 137 10218 46.73 819 796 201.6
B 8 128 4822188 33706.21 664 641 143.0
B 10 16 94791 658.18 664 641 143.0
B 4 171 30974 212.05 664 641 143.0
C 15 198 1765795 8852.82 735 727 199.4
C 15 182 191531 956.99 735 727 199.4
C 14 254 134539 671.14 735 727 199.4
D 15 142 3218743 14374.22 791 754 223.9
D 2 249 95860 424.82 791 754 223.9
D 12 33 67878 299.83 791 754 223.9

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