ASTROSAT CZTI

Data Quality Report

Orbit 31251

Creation date: 2024-06-27T20:25:37.985356
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_073T02_9000004522_31251cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31251cztM0_level2_quad_clean.evt
Size (bytes)585,432,00082,742,400
Size558.3 MB 78.9 MB
Events in quadrant A3,304,861542,478
Events in quadrant B4,860,023535,592
Events in quadrant C4,092,209518,334
Events in quadrant D5,080,291503,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0181
D0181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013014
B013010
C013010
D013111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146811156
B0201831877
C0179151473
D0216092025

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5867901.534004%
B57691973.414803%
C58222754.723463%
D57711582.737827%

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 7612 6042 0 0 0.00% 0.00%
B 7600 5917 2 2 0.03% 0.03%
C 7616 5997 30 30 0.39% 0.50%
D 7599 5915 36 36 0.47% 0.61%

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 10653 58.3 856 845 168.2
A 3 137 7706 40.78 856 845 168.2
A 0 226 7200 37.77 856 845 168.2
B 6 159 1506536 9861.31 822 806 152.7
B 15 33 66936 433.1 822 806 152.7
B 0 190 44142 283.82 822 806 152.7
C 3 233 628862 3428.98 803 811 183.2
C 0 10 148252 804.99 803 811 183.2
C 14 238 134478 729.78 803 811 183.2
D 8 195 1751085 8541.29 809 794 204.9
D 12 233 196239 953.76 809 794 204.9
D 2 250 61482 296.15 809 794 204.9

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