ASTROSAT CZTI

Data Quality Report

Orbit 03856

Creation date: 2024-06-27T14:34:27.058122
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/AS1G05_189T01_9000000492_03856cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03856cztM0_level2_quad_clean.evt
Size (bytes)613,471,68065,741,760
Size585.1 MB 62.7 MB
Events in quadrant A3,423,745390,650
Events in quadrant B3,584,802387,392
Events in quadrant C5,792,275367,117
Events in quadrant D5,295,805349,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151525
B0153334
C0222078
D02092414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71163094.342327%
B71163534.960652%
C71155407.589599%
D711590912.775826%

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 7467 7117 7 7 0.09% 0.10%
B 7467 7117 2 2 0.03% 0.03%
C 7467 7117 148 148 1.98% 2.08%
D 7467 7118 653 653 8.75% 9.17%

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 0 50 38126 212.73 850 831 175.3
A 8 15 36246 202.01 850 831 175.3
A 0 149 29573 163.95 850 831 175.3
B 15 204 158292 932.44 856 834 168.9
B 14 167 74491 436.18 856 834 168.9
B 10 249 17834 100.67 856 834 168.9
C 2 53 2522137 13276.82 805 807 189.9
C 9 247 86423 450.84 805 807 189.9
C 10 65 10699 52.09 805 807 189.9
D 8 112 1813174 9407.87 792 766 192.6
D 13 248 314999 1631.12 792 766 192.6
D 2 63 64688 331.81 792 766 192.6

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
Veto Counter