ASTROSAT CZTI

Data Quality Report

Orbit 02475

Creation date: 2024-06-27T14:18:18.312962
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/AS1G02_018T06_9000000370_02475cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02475cztM0_level2_quad_clean.evt
Size (bytes)413,245,44063,069,120
Size394.1 MB 60.1 MB
Events in quadrant A3,008,728364,022
Events in quadrant B3,136,500378,394
Events in quadrant C2,971,850375,324
Events in quadrant D2,979,545362,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127733
B0131282
C0127652
D0130672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148600.975927%
B6148771.252440%
C6148651.057254%
D6148731.187378%

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 7438 6150 0 0 0.00% 0.00%
B 7438 6150 7 7 0.09% 0.11%
C 7438 6150 0 0 0.00% 0.00%
D 7438 6150 13 13 0.17% 0.21%

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 8 15 38946 245.71 768 751 155.4
A 14 63 10695 63.97 768 751 155.4
A 12 194 8415 49.3 768 751 155.4
B 5 172 37767 247.5 785 766 149.5
B 4 200 17658 112.99 785 766 149.5
B 4 48 16831 107.46 785 766 149.5
C 13 61 6926 35.12 754 758 175.6
C 12 4 6358 31.89 754 758 175.6
C 10 65 5804 28.73 754 758 175.6
D 13 238 74637 421.7 742 727 175.3
D 5 172 31690 176.66 742 727 175.3
D 15 194 13624 73.58 742 727 175.3

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