ASTROSAT CZTI

Data Quality Report

Orbit 47286

Creation date: 2024-06-27T23:33:45.464649
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/AS1A13_025T01_9000006312_47286cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47286cztM0_level2_quad_clean.evt
Size (bytes)580,037,760104,806,080
Size553.2 MB 100.0 MB
Events in quadrant A7,378,815698,117
Events in quadrant B3,350,029779,067
Events in quadrant C3,063,223731,316
Events in quadrant D7,188,368522,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262452
B0141372
C0135022
D0257382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63325078.006949%
B6332691.089703%
C6332600.947568%
D6332144122.757423%

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 7602 6333 227 227 2.99% 3.58%
B 7602 6333 7 7 0.09% 0.11%
C 7602 6333 39 39 0.51% 0.62%
D 7602 6333 1440 1440 18.94% 22.74%

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 10 83 3652003 24209.35 727 712 150.8
A 9 191 472720 3129.58 727 712 150.8
A 15 235 412612 2731.04 727 712 150.8
B 0 200 210609 1427.03 752 732 147.1
B 0 198 39283 262.12 752 732 147.1
B 5 171 30488 202.32 752 732 147.1
C 14 254 100383 573.67 737 741 173.7
C 12 2 59634 339.07 737 741 173.7
C 0 207 11971 64.65 737 741 173.7
D 6 112 3936979 23388.73 662 641 168.3
D 10 181 204645 1212.14 662 641 168.3
D 14 34 202831 1201.36 662 641 168.3

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