ASTROSAT CZTI

Data Quality Report

Orbit 20200106_A07_138T03_9000003412_level2

Creation date: 2020-01-07T10:18:50.464359
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/AS1A07_138T03_9000003412cztM0_level2_bc.evt modeM0/AS1A07_138T03_9000003412cztM0_level2_quad_clean.evt
Size (bytes)621,411,840179,640,000
Size592.6 MB 171.3 MB
Events in quadrant A7,279,3751,076,733
Events in quadrant B2,978,3011,166,459
Events in quadrant C2,836,2501,118,721
Events in quadrant D4,746,9531,092,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421080
B0294590
C0292800
D0358370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14269162411.381316%
B142691250.876025%
C142691511.058238%
D142695433.805452%

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 15733 14268 1054 1054 6.70% 7.39%
B 15733 14267 4 4 0.03% 0.03%
C 15733 14268 1 1 0.01% 0.01%
D 15733 14267 70 70 0.44% 0.49%

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 6 16 4645094 30540.21 679 665 152.1
A 13 254 18382 116.5 679 665 152.1
A 10 253 8076 48.73 679 665 152.1
B 0 190 90489 641.03 721 703 140.1
B 4 216 34252 239.53 721 703 140.1
B 0 189 28291 196.97 721 703 140.1
C 2 16 73355 440.96 687 683 164.8
C 0 207 47869 286.32 687 683 164.8
C 0 10 22596 132.97 687 683 164.8
D 13 153 574458 3478.1 690 664 165.0
D 1 52 496616 3006.25 690 664 165.0
D 12 227 387931 2347.45 690 664 165.0

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