ASTROSAT CZTI

Data Quality Report

Orbit 31370

Creation date: 2024-06-27T20:27:22.904700
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_101T01_9000004546_31370cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31370cztM0_level2_quad_clean.evt
Size (bytes)581,261,76080,487,360
Size554.3 MB 76.8 MB
Events in quadrant A3,528,691502,940
Events in quadrant B5,511,962496,978
Events in quadrant C3,886,257471,131
Events in quadrant D4,202,642478,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144772
B0213863
C0155792
D0168212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70051001.427552%
B70031662.370413%
C70041962.798401%
D7004731.042262%

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 7895 7006 0 0 0.00% 0.00%
B 7894 7005 7 7 0.09% 0.10%
C 7894 7005 28 28 0.35% 0.40%
D 7894 7005 5 5 0.06% 0.07%

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 12221 61.75 915 896 183.4
A 3 137 9202 45.29 915 896 183.4
A 0 226 7765 37.46 915 896 183.4
B 6 159 1858699 10823.69 891 869 171.6
B 0 190 65225 374.94 891 869 171.6
B 4 80 55711 319.51 891 869 171.6
C 3 233 218648 1100.89 851 856 197.8
C 0 10 172587 868.06 851 856 197.8
C 14 238 146251 734.94 851 856 197.8
D 8 195 634513 3049.46 878 855 207.8
D 10 203 145220 694.75 878 855 207.8
D 12 233 43272 204.13 878 855 207.8

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