ASTROSAT CZTI

Data Quality Report

Orbit 31137

Creation date: 2024-06-27T20:23:47.105624
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_071T64_9000004496_31137cztM0_level2.evt modeM0/AS1A10_071T64_9000004496_31137cztM0_level2_quad_clean.evt
Size (bytes)563,924,16095,074,560
Size537.8 MB 90.7 MB
Events in quadrant A3,267,958631,186
Events in quadrant B5,344,437629,950
Events in quadrant C3,485,921599,530
Events in quadrant D4,554,231578,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135832
B0200462
C0141942
D0176583

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295711.127879%
B62951732.748213%
C62951943.081811%
D62941762.796314%

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 7565 6296 0 0 0.00% 0.00%
B 7565 6296 9 9 0.12% 0.14%
C 7565 6296 30 30 0.40% 0.48%
D 7564 6295 96 96 1.27% 1.53%

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 12 96 17593 99.33 842 826 168.8
A 13 254 11843 65.27 842 826 168.8
A 3 137 7663 40.5 842 826 168.8
B 6 159 1894952 12009.52 833 814 157.7
B 0 190 52219 325.93 833 814 157.7
B 0 230 34830 215.67 833 814 157.7
C 0 10 174596 926.43 798 806 187.6
C 14 238 130803 692.98 798 806 187.6
C 4 175 37410 195.13 798 806 187.6
D 8 195 1339285 6915.77 806 787 193.5
D 2 120 46218 234.73 806 787 193.5
D 13 249 33653 169.81 806 787 193.5

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