ASTROSAT CZTI

Data Quality Report

Orbit 53359

Creation date: 2025-08-09T10:34:29.655088
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/AS1C09_011T09_9000006494_53359cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53359cztM0_level2_quad_clean.evt
Size (bytes)921,240,00086,912,640
Size878.6 MB 82.9 MB
Events in quadrant A5,296,604698,988
Events in quadrant B6,110,773734,708
Events in quadrant C17,501,16621,402
Events in quadrant D4,598,032643,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211470
B0235071
C0570760
D0194400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76592593.381643%
B76585917.717420%
C7658750297.962915%
D76592082.715759%

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 7659 7659 213 213 2.78% 2.78%
B 7658 7658 363 363 4.74% 4.74%
C 7658 7658 6669 6669 87.09% 87.09%
D 7659 7659 174 174 2.27% 2.27%

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 14 1171417 6075.24 774 756 192.7
A 15 174 812646 4213.37 774 756 192.7
A 14 239 168187 868.9 774 756 192.7
B 4 206 895863 5503.96 769 744 162.6
B 4 171 558396 3428.93 769 744 162.6
B 2 249 546215 3354.03 769 744 162.6
C 15 158 10183741 89287.68 414 411 114.1
C 15 178 3309001 29009.79 414 411 114.1
C 15 224 1729661 15162.1 414 411 114.1
D 6 239 985701 4583.63 757 723 214.9
D 2 249 131580 608.95 757 723 214.9
D 0 18 131486 608.51 757 723 214.9

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