ASTROSAT CZTI

Data Quality Report

Orbit 31111

Creation date: 2024-06-27T20:23:30.473583
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_31111cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31111cztM0_level2_quad_clean.evt
Size (bytes)665,144,640117,452,160
Size634.3 MB 112.0 MB
Events in quadrant A3,815,073784,393
Events in quadrant B5,997,802775,729
Events in quadrant C5,227,322726,391
Events in quadrant D4,589,199741,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162442
B0233882
C0204432
D0187162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76021341.762694%
B76033234.248323%
C760386811.416546%
D76031421.867684%

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 8562 7605 0 0 0.00% 0.00%
B 8563 7606 5 5 0.06% 0.07%
C 8563 7606 339 339 3.96% 4.46%
D 8563 7606 15 15 0.18% 0.20%

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 15 174 20233 98.04 984 966 196.5
A 13 254 12556 58.97 984 966 196.5
A 3 137 10302 47.5 984 966 196.5
B 6 159 2118927 11282.22 966 943 187.7
B 0 183 26796 137.72 966 943 187.7
B 0 230 24688 126.49 966 943 187.7
C 0 10 1416018 6570.64 915 924 215.4
C 14 238 143486 661.95 915 924 215.4
C 10 22 54980 251.0 915 924 215.4
D 8 195 680927 2982.0 952 928 228.0
D 13 174 189999 829.13 952 928 228.0
D 2 250 60857 262.81 952 928 228.0

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