ASTROSAT CZTI

Data Quality Report

Orbit 45938

Creation date: 2024-06-27T23:17:55.929680
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_033T03_9000006144_45938cztM0_level2.fits modeM0/AS1A13_033T03_9000006144_45938cztM0_level2_quad_clean.evt
Size (bytes)593,784,000114,278,400
Size566.3 MB 109.0 MB
Events in quadrant A6,136,973780,373
Events in quadrant B6,806,456735,912
Events in quadrant C3,492,199782,103
Events in quadrant D5,015,325686,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229862
B0250692
C0151922
D0195892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68302143.133236%
B683093313.660322%
C6830991.449488%
D68304206.149341%

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 8005 6831 28 28 0.35% 0.41%
B 8005 6831 547 547 6.83% 8.01%
C 8005 6832 75 75 0.94% 1.10%
D 8005 6832 396 396 4.95% 5.80%

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 3057995 18890.16 786 772 161.8
A 0 247 43065 261.32 786 772 161.8
A 3 137 8677 48.84 786 772 161.8
B 3 112 3455416 23100.62 762 741 149.5
B 4 158 275513 1837.34 762 741 149.5
B 12 111 18829 120.95 762 741 149.5
C 14 254 360983 1975.55 776 780 182.3
C 3 233 32761 175.4 776 780 182.3
C 5 250 27537 146.75 776 780 182.3
D 2 37 864720 4532.56 757 735 190.6
D 12 233 580620 3042.14 757 735 190.6
D 2 249 200529 1048.14 757 735 190.6

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