ASTROSAT CZTI

Data Quality Report

Orbit 20220302_A10_094T38_9000004988_level2

Creation date: 2022-03-08T15:18:20.871442
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_094T38_9000004988cztM0_level2_bc.evt modeM0/AS1A10_094T38_9000004988cztM0_level2_quad_clean.evt
Size (bytes)182,024,64055,540,800
Size173.6 MB 53.0 MB
Events in quadrant A796,026367,433
Events in quadrant B1,087,038361,819
Events in quadrant C954,604359,374
Events in quadrant D2,417,623333,780

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075460
B088470
C078570
D0136970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366960.163532%
B36691504.088307%
C3669280.763151%
D366945112.292178%

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 4981 3670 0 0 0.00% 0.00%
B 4981 3669 18 18 0.36% 0.49%
C 4981 3669 6 6 0.12% 0.16%
D 4981 3668 24 24 0.48% 0.65%

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 15 223 32126 739.05 182 178 43.2
A 10 83 27921 641.78 182 178 43.2
A 9 143 15350 350.97 182 178 43.2
B 5 172 174980 4597.16 179 175 38.0
B 5 255 80239 2105.58 179 175 38.0
B 0 218 62784 1646.54 179 175 38.0
C 15 214 149407 3464.98 176 173 43.1
C 0 10 62133 1438.61 176 173 43.1
C 14 67 36654 847.03 176 173 43.1
D 8 195 650021 14704.63 165 160 44.2
D 2 250 423677 9583.07 165 160 44.2
D 1 52 330231 7468.63 165 160 44.2

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