ASTROSAT CZTI

Data Quality Report

Orbit 13388

Creation date: 2024-06-27T16:40:02.486335
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/AS1A04_103T01_9000001988_13388cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13388cztM0_level2_quad_clean.evt
Size (bytes)486,973,44092,430,720
Size464.4 MB 88.1 MB
Events in quadrant A3,343,412603,337
Events in quadrant B3,405,081617,080
Events in quadrant C3,419,447592,765
Events in quadrant D4,151,680545,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140403
B0141842
C0141222
D0164542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6312701.108999%
B6312731.156527%
C6312600.950570%
D63123725.893536%

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 7638 6314 4 4 0.05% 0.06%
B 7638 6314 2 2 0.03% 0.03%
C 7638 6314 7 7 0.09% 0.11%
D 7638 6314 318 318 4.16% 5.04%

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 15 69 43178 250.82 844 829 168.8
A 9 143 27394 157.34 844 829 168.8
A 1 162 14579 81.44 844 829 168.8
B 0 85 29334 182.31 848 831 156.3
B 3 64 21721 133.62 848 831 156.3
B 3 209 17397 105.96 848 831 156.3
C 14 220 167485 907.87 807 814 183.6
C 3 233 101629 549.15 807 814 183.6
C 13 61 5915 27.79 807 814 183.6
D 1 52 1061185 5657.36 783 761 187.4
D 13 249 68503 361.4 783 761 187.4
D 13 122 24724 127.84 783 761 187.4

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