ASTROSAT CZTI

Data Quality Report

Orbit 07941

Creation date: 2024-06-27T15:25:47.997703
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/AS1G06_117T01_9000001086_07941cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07941cztM0_level2_quad_clean.evt
Size (bytes)479,877,12089,089,920
Size457.6 MB 85.0 MB
Events in quadrant A3,132,949557,881
Events in quadrant B3,707,087561,440
Events in quadrant C3,457,869565,298
Events in quadrant D3,774,018540,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140043
B0154622
C0150142
D0159682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6786861.267315%
B67862353.463012%
C67861442.122016%
D67861341.974654%

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 8621 6788 0 0 0.00% 0.00%
B 8621 6788 100 100 1.16% 1.47%
C 8621 6788 8 8 0.09% 0.12%
D 8621 6788 25 25 0.29% 0.37%

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 0 226 7491 40.88 810 792 163.9
A 12 194 6984 37.79 810 792 163.9
A 13 253 5627 29.51 810 792 163.9
B 4 239 183555 1178.44 812 791 155.1
B 10 16 129854 832.19 812 791 155.1
B 4 81 78800 502.99 812 791 155.1
C 1 16 347275 1873.49 796 797 184.9
C 13 61 5882 27.5 796 797 184.9
C 12 4 2859 11.15 796 797 184.9
D 1 52 533407 2716.67 795 769 196.1
D 5 233 76100 384.22 795 769 196.1
D 2 152 52736 265.05 795 769 196.1

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