ASTROSAT CZTI

Data Quality Report

Orbit 31696

Creation date: 2024-06-27T20:31:38.766699
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/AS1T04_034T01_9000004632_31696cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31696cztM0_level2_quad_clean.evt
Size (bytes)636,606,72067,648,320
Size607.1 MB 64.5 MB
Events in quadrant A4,083,476405,163
Events in quadrant B5,470,117405,237
Events in quadrant C4,117,226388,926
Events in quadrant D5,157,502382,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163332
B0207802
C0164212
D0200712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66872613.903096%
B66871612.407657%
C66872423.618962%
D66871882.811425%

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 7757 6688 78 78 1.01% 1.17%
B 7757 6688 9 9 0.12% 0.13%
C 7757 6688 50 50 0.64% 0.75%
D 7757 6688 88 88 1.13% 1.32%

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 13 660092 3752.12 879 863 175.7
A 14 238 23306 127.74 879 863 175.7
A 13 254 12694 67.34 879 863 175.7
B 6 159 1779646 10663.59 871 851 166.8
B 4 80 94094 558.98 871 851 166.8
B 0 190 65346 386.64 871 851 166.8
C 10 22 446347 2262.09 842 849 196.9
C 14 238 138150 697.17 842 849 196.9
C 3 233 110848 558.54 842 849 196.9
D 12 227 1017178 5025.5 856 836 202.2
D 8 195 637482 3148.02 856 836 202.2
D 2 250 89746 439.63 856 836 202.2

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