ASTROSAT CZTI

Data Quality Report

Orbit 31434

Creation date: 2024-06-27T20:28:18.935748
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_094T28_9000004578_31434cztM0_level2.evt modeM0/AS1A10_094T28_9000004578_31434cztM0_level2_quad_clean.evt
Size (bytes)662,840,640145,546,560
Size632.1 MB 138.8 MB
Events in quadrant A3,614,3891,000,146
Events in quadrant B7,226,949934,775
Events in quadrant C3,862,285976,611
Events in quadrant D4,841,005952,463

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158901
B0273561
C0163321
D0197591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7827610.779354%
B782779310.131596%
C78271592.031430%
D78281221.558508%

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 8496 7827 0 0 0.00% 0.00%
B 8496 7826 512 512 6.03% 6.54%
C 8496 7827 8 8 0.09% 0.10%
D 8497 7827 59 59 0.69% 0.75%

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 16624 84.73 934 914 185.4
A 3 137 9600 46.85 934 914 185.4
A 0 226 7778 37.02 934 914 185.4
B 6 159 2111762 12392.17 873 848 170.3
B 12 1 1482073 8695.57 873 848 170.3
B 4 80 119648 697.42 873 848 170.3
C 14 238 166917 787.81 903 907 210.7
C 3 233 108957 512.76 903 907 210.7
C 14 254 32966 152.14 903 907 210.7
D 8 195 679660 3137.26 910 887 216.4
D 1 52 223169 1027.38 910 887 216.4
D 12 218 130048 596.98 910 887 216.4

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