ASTROSAT CZTI

Data Quality Report

Orbit 31196

Creation date: 2024-06-27T20:24:51.189427
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_082T10_9000004512_31196cztM0_level2.evt modeM0/AS1A10_082T10_9000004512_31196cztM0_level2_quad_clean.evt
Size (bytes)715,798,080105,056,640
Size682.6 MB 100.2 MB
Events in quadrant A3,219,302725,648
Events in quadrant B6,119,794697,286
Events in quadrant C3,581,576692,641
Events in quadrant D8,316,800610,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135991
B0225681
C0146822
D0295011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65231291.977618%
B65235488.401042%
C65232543.893914%
D6523125719.270274%

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 7473 6524 0 0 0.00% 0.00%
B 7473 6524 183 183 2.45% 2.81%
C 7473 6524 50 50 0.67% 0.77%
D 7473 6524 1054 1054 14.10% 16.16%

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 13 254 12908 73.01 833 816 165.6
A 3 137 7933 42.97 833 816 165.6
A 0 226 7070 37.76 833 816 165.6
B 6 159 1965167 12967.68 805 786 151.5
B 4 80 684318 4512.27 805 786 151.5
B 4 171 86091 563.13 805 786 151.5
C 0 10 246237 1321.17 798 802 185.8
C 14 238 131361 702.8 798 802 185.8
C 4 175 50443 267.22 798 802 185.8
D 8 195 2160088 11552.97 723 707 186.9
D 12 218 1701400 9098.93 723 707 186.9
D 12 79 1536245 8215.33 723 707 186.9

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