ASTROSAT CZTI

Data Quality Report

Orbit 20200801_A09_012T03_9000003782_level2

Creation date: 2021-01-09T14:08:12.341404
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/AS1A09_012T03_9000003782cztM0_level2_bc.evt modeM0/AS1A09_012T03_9000003782cztM0_level2_quad_clean.evt
Size (bytes)335,957,760196,807,680
Size320.4 MB 187.7 MB
Events in quadrant A2,043,7931,318,031
Events in quadrant B2,208,4111,342,000
Events in quadrant C2,120,7981,319,791
Events in quadrant D3,117,9731,294,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203080
B0205340
C0206890
D0235240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99281551.561241%
B99281541.551168%
C99282302.316680%
D99282602.618856%

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 11673 9929 0 0 0.00% 0.00%
B 11673 9928 0 0 0.00% 0.00%
C 11673 9928 0 0 0.00% 0.00%
D 11673 9928 25 25 0.21% 0.25%

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 13 254 14800 122.71 527 517 116.4
A 0 13 3613 26.6 527 517 116.4
A 0 226 3347 24.31 527 517 116.4
B 0 230 109173 1065.23 532 521 102.0
B 0 190 29728 286.35 532 521 102.0
B 0 245 20957 200.36 532 521 102.0
C 2 16 82605 649.0 521 519 126.5
C 3 233 34838 271.34 521 519 126.5
C 13 61 3014 19.73 521 519 126.5
D 1 52 924666 7423.7 527 513 124.5
D 12 233 95128 760.04 527 513 124.5
D 2 234 40911 324.52 527 513 124.5

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