ASTROSAT CZTI

Data Quality Report

Orbit 29643

Creation date: 2024-06-27T20:06:22.921506
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/AS1T03_286T01_9000004268_29643cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29643cztM0_level2_quad_clean.evt
Size (bytes)479,090,880118,693,440
Size456.9 MB 113.2 MB
Events in quadrant A3,131,956789,157
Events in quadrant B3,298,849816,891
Events in quadrant C3,367,229794,842
Events in quadrant D4,287,658758,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135672
B0139872
C0141743
D0170572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244380.608584%
B6244731.169122%
C62431442.306583%
D62431642.626942%

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 7489 6245 8 8 0.11% 0.13%
B 7489 6245 18 18 0.24% 0.29%
C 7488 6243 24 24 0.32% 0.38%
D 7488 6243 93 93 1.24% 1.49%

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 12 96 60668 376.76 796 781 159.0
A 13 254 11995 70.55 796 781 159.0
A 3 137 7502 42.28 796 781 159.0
B 15 33 104025 698.3 800 781 147.9
B 0 156 20532 133.59 800 781 147.9
B 12 111 17842 115.39 800 781 147.9
C 10 22 131302 717.31 788 795 181.9
C 14 238 128426 701.5 788 795 181.9
C 3 233 15257 79.49 788 795 181.9
D 8 195 304507 1651.19 782 764 184.0
D 12 33 304298 1650.05 782 764 184.0
D 7 80 225255 1220.36 782 764 184.0

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