ASTROSAT CZTI

Data Quality Report

Orbit 35323

Creation date: 2022-04-10T20:02:38.221636
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/AS1A11_046T08_9000005062_35323cztM0_level2.evt modeM0/AS1A11_046T08_9000005062_35323cztM0_level2_quad_clean.evt
Size (bytes)964,281,60092,445,120
Size919.6 MB 88.2 MB
Events in quadrant A12,695,620447,655
Events in quadrant B8,165,937592,999
Events in quadrant C4,494,264689,757
Events in quadrant D3,472,238675,372

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414983
B0281612
C0170872
D0139092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5583456781.801899%
B5583208237.291779%
C55832544.549525%
D55831462.615081%

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 7345 5583 4563 4563 62.12% 81.73%
B 7346 5584 1645 1645 22.39% 29.46%
C 7346 5584 219 219 2.98% 3.92%
D 7346 5584 141 141 1.92% 2.53%

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 15 169 10803762 119429.81 447 440 90.5
A 10 83 79009 868.57 447 440 90.5
A 7 3 31030 338.17 447 440 90.5
B 5 236 4654254 45035.77 543 530 103.3
B 5 172 1211041 11714.55 543 530 103.3
B 4 232 68285 655.69 543 530 103.3
C 3 233 1348869 9561.02 614 621 141.0
C 0 10 507444 3594.11 614 621 141.0
C 15 214 230207 1628.1 614 621 141.0
D 10 118 306005 2052.98 621 605 148.8
D 12 233 260966 1750.22 621 605 148.8
D 7 223 95986 641.18 621 605 148.8

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