ASTROSAT CZTI

Data Quality Report

Orbit 20230716_A12_088T21_9000005764_level2

Creation date: 2023-07-21T13:13:02.780666
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/AS1A12_088T21_9000005764cztM0_level2.fits modeM0/AS1A12_088T21_9000005764cztM0_level2_quad_clean.evt
Size (bytes)193,207,680212,780,160
Size184.3 MB 202.9 MB
Events in quadrant A1,130,4741,269,839
Events in quadrant B1,103,9121,292,815
Events in quadrant C1,132,8281,246,933
Events in quadrant D941,9241,092,571

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552410
B0474390
C0449790
D0719250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04540
C04540
D04540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224015532.468640%
B224011730.772287%
C22401100.044641%
D2240115566.946118%

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 28072 22398 0 0 0.00% 0.00%
B 28072 22400 0 0 0.00% 0.00%
C 28072 22401 0 0 0.00% 0.00%
D 28072 22383 0 0 0.00% 0.00%

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 9 19 946 8.77 294 275 76.5
A 7 110 882 7.93 294 275 76.5
A 0 29 877 7.87 294 275 76.5
B 2 9 916 10.75 291 277 59.4
B 3 80 836 9.41 291 277 59.4
B 2 8 793 8.68 291 277 59.4
C 1 81 922 8.21 299 279 78.4
C 1 80 881 7.68 299 279 78.4
C 3 202 843 7.2 299 279 78.4
D 10 113 720 6.43 270 246 73.7
D 7 3 693 6.06 270 246 73.7
D 6 231 675 5.82 270 246 73.7

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