ASTROSAT CZTI

Data Quality Report

Orbit 31125

Creation date: 2024-06-27T20:23:40.927617
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_31125cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31125cztM0_level2_quad_clean.evt
Size (bytes)596,969,280112,403,520
Size569.3 MB 107.2 MB
Events in quadrant A3,705,719739,507
Events in quadrant B5,904,807730,781
Events in quadrant C3,973,990710,980
Events in quadrant D3,988,758703,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158103
B0228653
C0164353
D0168193

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7469530.709600%
B74691922.570625%
C74692152.878565%
D7470540.722892%

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 8914 7472 0 0 0.00% 0.00%
B 8914 7472 2 2 0.02% 0.03%
C 8914 7472 13 13 0.15% 0.17%
D 8915 7473 8 8 0.09% 0.11%

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 11403 54.06 960 943 193.5
A 3 137 9910 46.34 960 943 193.5
A 0 226 7779 35.33 960 943 193.5
B 6 159 2072665 11319.1 946 924 183.0
B 0 183 38100 203.11 946 924 183.0
B 4 80 30451 161.32 946 924 183.0
C 0 10 159291 728.06 927 936 217.5
C 14 238 149233 681.81 927 936 217.5
C 10 22 19378 84.79 927 936 217.5
D 8 195 386800 1746.47 935 912 221.0
D 2 250 59059 263.16 935 912 221.0
D 2 234 28232 123.65 935 912 221.0

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