ASTROSAT CZTI

Data Quality Report

Orbit 12914

Creation date: 2024-06-27T16:33:54.162957
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_116T01_9000001896_12914cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12914cztM0_level2_quad_clean.evt
Size (bytes)566,654,400114,122,880
Size540.4 MB 108.8 MB
Events in quadrant A3,379,497769,498
Events in quadrant B5,068,079709,281
Events in quadrant C3,107,921768,089
Events in quadrant D5,129,308719,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147972
B0197341
C0143651
D0199431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70201241.766382%
B702089512.749288%
C7020460.655271%
D70203965.641026%

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 7491 7022 9 9 0.12% 0.13%
B 7491 7022 435 435 5.81% 6.19%
C 7491 7022 1 1 0.01% 0.01%
D 7491 7022 295 295 3.94% 4.20%

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 38321 223.09 828 810 168.1
A 13 248 36578 212.72 828 810 168.1
A 15 174 27218 157.06 828 810 168.1
B 4 239 1823077 12588.4 771 752 144.8
B 3 64 140733 966.97 771 752 144.8
B 0 214 46868 318.56 771 752 144.8
C 13 61 5943 28.18 795 795 182.7
C 12 4 4341 19.41 795 795 182.7
C 8 222 3167 12.98 795 795 182.7
D 1 52 1973349 10460.36 781 756 188.6
D 8 195 116263 612.52 781 756 188.6
D 10 157 34711 180.06 781 756 188.6

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