ASTROSAT CZTI

Data Quality Report

Orbit 13398

Creation date: 2024-06-27T16:40:13.011939
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/AS1A04_103T01_9000001988_13398cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13398cztM0_level2_quad_clean.evt
Size (bytes)453,980,16074,923,200
Size432.9 MB 71.5 MB
Events in quadrant A3,211,646451,782
Events in quadrant B3,400,012460,204
Events in quadrant C3,430,023452,148
Events in quadrant D3,247,871433,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139083
B0143082
C0145322
D0140982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6753681.006960%
B6753851.258700%
C6753620.918110%
D6753460.681179%

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 7718 6753 1 1 0.01% 0.01%
B 7718 6753 24 24 0.31% 0.36%
C 7718 6753 14 14 0.18% 0.21%
D 7718 6753 1 1 0.01% 0.01%

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 1 162 19072 108.95 826 806 167.7
A 15 69 8144 43.77 826 806 167.7
A 0 226 7274 38.58 826 806 167.7
B 15 33 64674 404.67 825 804 157.8
B 3 64 35354 218.9 825 804 157.8
B 0 230 23637 144.67 825 804 157.8
C 14 220 180223 965.49 808 814 185.8
C 3 233 63556 337.65 808 814 185.8
C 14 234 36204 190.45 808 814 185.8
D 8 195 75147 385.58 804 782 192.9
D 1 52 55475 283.58 804 782 192.9
D 2 136 50621 258.42 804 782 192.9

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