ASTROSAT CZTI

Data Quality Report

Orbit 20161212_G06_091T01_9000000880_level2

Creation date: 2025-11-08T06:36:33.450875
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/AS1G06_091T01_9000000880cztM0_level2.fits modeM0/AS1G06_091T01_9000000880cztM0_level2_quad_clean.evt
Size (bytes)599,901,120716,711,040
Size572.1 MB 683.5 MB
Events in quadrant A3,535,3114,441,378
Events in quadrant B3,454,3754,471,293
Events in quadrant C3,589,3304,317,503
Events in quadrant D3,039,0023,929,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01534410
B01474370
C01357150
D01536300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01090
C01100
D01100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013480
B013460
C013520
D013540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629521823.291349%
B6630718692.818707%
C663417681.157655%
D6628420863.147064%

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 77612 66753 0 0 0.00% 0.00%
B 77612 66721 0 0 0.00% 0.00%
C 77612 66758 0 0 0.00% 0.00%
D 77612 66718 0 0 0.00% 0.00%

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 14 188 3593 11.73 918 858 233.2
A 0 29 3583 11.69 918 858 233.2
A 7 110 3085 9.55 918 858 233.2
B 2 9 3073 12.37 912 871 178.1
B 12 226 2442 8.82 912 871 178.1
B 14 254 2390 8.53 912 871 178.1
C 1 81 2582 6.89 946 877 247.4
C 1 80 2580 6.88 946 877 247.4
C 12 241 2569 6.84 946 877 247.4
D 11 82 2232 6.26 867 788 230.8
D 3 14 2210 6.16 867 788 230.8
D 3 31 2196 6.1 867 788 230.8

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