ASTROSAT CZTI

Data Quality Report

Orbit 03731

Creation date: 2024-06-27T14:32:56.841836
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/AS1G05_248T01_9000000486_03731cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03731cztM0_level2_quad_clean.evt
Size (bytes)476,997,12057,087,360
Size454.9 MB 54.4 MB
Events in quadrant A3,807,884326,408
Events in quadrant B4,180,883317,414
Events in quadrant C2,939,351317,668
Events in quadrant D3,077,832314,870

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155892
B0167341
C0133571
D0137721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64821822.807775%
B64822193.378587%
C6482610.941068%
D6482640.987350%

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 7527 6482 82 82 1.09% 1.27%
B 7527 6482 95 95 1.26% 1.47%
C 7527 6483 1 1 0.01% 0.02%
D 7527 6482 7 7 0.09% 0.11%

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 334161 2104.05 768 750 158.5
A 0 118 256661 1614.97 768 750 158.5
A 13 251 159029 998.85 768 750 158.5
B 0 173 721829 4804.9 774 754 150.1
B 15 204 241968 1607.34 774 754 150.1
B 4 81 103098 681.97 774 754 150.1
C 12 4 29678 167.62 743 746 172.6
C 13 61 6196 31.57 743 746 172.6
C 2 53 3959 18.61 743 746 172.6
D 13 239 55925 306.96 743 721 179.8
D 2 37 46186 252.8 743 721 179.8
D 2 232 35120 191.27 743 721 179.8

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
Veto Counter