ASTROSAT CZTI

Data Quality Report

Orbit 31096

Creation date: 2024-06-27T20:23:19.157815
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_109T01_9000004492_31096cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31096cztM0_level2_quad_clean.evt
Size (bytes)585,354,240110,430,720
Size558.2 MB 105.3 MB
Events in quadrant A3,525,863728,040
Events in quadrant B5,552,086723,971
Events in quadrant C3,885,132700,466
Events in quadrant D4,278,252691,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151142
B0218184
C0160672
D0173952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7187851.182691%
B71861742.421375%
C71862433.381575%
D7186721.001948%

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 7677 7189 0 0 0.00% 0.00%
B 7676 7188 0 0 0.00% 0.00%
C 7676 7188 10 10 0.13% 0.14%
D 7676 7188 4 4 0.05% 0.06%

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 13872 70.33 913 897 184.5
A 3 137 9443 46.32 913 897 184.5
A 0 226 7600 36.33 913 897 184.5
B 6 159 1987690 11387.27 898 877 174.5
B 12 111 21686 119.27 898 877 174.5
B 11 111 19846 108.72 898 877 174.5
C 0 10 177333 848.34 878 885 208.0
C 14 238 140992 673.62 878 885 208.0
C 10 22 110486 526.95 878 885 208.0
D 8 195 479379 2240.14 887 865 213.6
D 13 174 395377 1846.89 887 865 213.6
D 2 250 34056 155.38 887 865 213.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter