ASTROSAT CZTI

Data Quality Report

Orbit 34455

Creation date: 2022-02-11T04:19:30.647733
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/AS1A10_058T06_9000004920_34455cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34455cztM0_level2_quad_clean.evt
Size (bytes)600,269,76084,381,120
Size572.5 MB 80.5 MB
Events in quadrant A2,690,560577,514
Events in quadrant B3,601,273571,616
Events in quadrant C4,818,561518,118
Events in quadrant D6,686,120491,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116853
B0143642
C0177532
D0237822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5653100.176897%
B56533105.483814%
C565369712.329736%
D565378013.797983%

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 7174 5654 1 1 0.01% 0.02%
B 7174 5654 225 225 3.14% 3.98%
C 7174 5654 602 602 8.39% 10.65%
D 7174 5654 758 758 10.57% 13.41%

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 42331 308.11 668 655 135.3
A 10 83 36971 268.48 668 655 135.3
A 12 227 14685 103.72 668 655 135.3
B 5 172 848767 6728.48 653 637 126.1
B 4 171 65045 510.97 653 637 126.1
B 0 229 54749 429.29 653 637 126.1
C 4 254 2107718 14656.65 615 622 143.8
C 15 214 224962 1560.48 615 622 143.8
C 3 233 47254 324.37 615 622 143.8
D 7 80 1478378 9765.86 613 596 151.3
D 8 195 1466393 9686.65 613 596 151.3
D 12 235 578546 3819.36 613 596 151.3

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