ASTROSAT CZTI

Data Quality Report

Orbit 18357

Creation date: 2024-06-27T17:48:47.770080
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/AS1A06_006T01_9000002720_18357cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18357cztM0_level2_quad_clean.evt
Size (bytes)566,040,96088,439,040
Size539.8 MB 84.3 MB
Events in quadrant A3,399,505563,662
Events in quadrant B3,824,345565,766
Events in quadrant C3,780,563552,060
Events in quadrant D5,665,602511,392

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145461
B0155791
C0154031
D0215291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69591762.529099%
B69602303.304598%
C69602463.534483%
D6959107015.375772%

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 7369 6960 2 2 0.03% 0.03%
B 7370 6961 23 23 0.31% 0.33%
C 7370 6961 29 29 0.39% 0.42%
D 7369 6960 827 827 11.22% 11.88%

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 15 174 47969 266.59 863 842 176.8
A 4 2 21433 116.48 863 842 176.8
A 6 16 12843 67.89 863 842 176.8
B 7 220 221915 1324.71 861 840 166.9
B 3 64 114671 682.09 861 840 166.9
B 0 189 31392 183.07 861 840 166.9
C 0 207 188521 969.65 827 832 193.6
C 4 254 170852 878.37 827 832 193.6
C 14 238 123658 634.55 827 832 193.6
D 12 110 2204604 11056.41 810 786 199.3
D 1 52 264225 1321.66 810 786 199.3
D 14 34 49321 243.5 810 786 199.3

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