ASTROSAT CZTI

Data Quality Report

Orbit 20210221_A10_053T43_9000004198_level2

Creation date: 2021-02-22T10:38:17.752022
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_053T43_9000004198cztM0_level2_bc.evt modeM0/AS1A10_053T43_9000004198cztM0_level2_quad_clean.evt
Size (bytes)546,753,60095,532,480
Size521.4 MB 91.1 MB
Events in quadrant A2,019,417616,188
Events in quadrant B2,578,612614,842
Events in quadrant C4,773,387568,654
Events in quadrant D6,642,213541,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176460
B0200730
C0273950
D0335290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7934911.146962%
B79341942.445173%
C79344595.785228%
D7934113914.355936%

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 9159 7935 0 0 0.00% 0.00%
B 9159 7934 1 1 0.01% 0.01%
C 9159 7934 5 5 0.05% 0.06%
D 9159 7935 314 314 3.43% 3.96%

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 0 13 22914 202.67 517 510 110.5
A 13 254 15615 136.64 517 510 110.5
A 0 226 3289 25.14 517 510 110.5
B 10 245 191823 1997.06 514 506 95.8
B 0 183 178592 1858.95 514 506 95.8
B 0 229 111835 1162.1 514 506 95.8
C 3 233 2917011 26181.33 478 478 111.4
C 2 114 15133 131.56 478 478 111.4
C 10 22 4689 37.8 478 478 111.4
D 1 52 2063416 19242.39 472 460 107.2
D 8 195 1859383 17339.25 472 460 107.2
D 7 80 755894 7046.37 472 460 107.2

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