ASTROSAT CZTI

Data Quality Report

Orbit 44722

Creation date: 2024-06-27T23:05:44.264727
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_009T01_9000006016_44722cztM0_level2.fits modeM0/AS1A13_009T01_9000006016_44722cztM0_level2_quad_clean.evt
Size (bytes)642,648,960108,987,840
Size612.9 MB 103.9 MB
Events in quadrant A7,188,024693,292
Events in quadrant B4,606,348758,447
Events in quadrant C3,082,730763,074
Events in quadrant D8,380,460606,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267052
B0184992
C0142102
D0297082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A686189112.986445%
B68614927.170966%
C6861290.422679%
D6861107515.668270%

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 7896 6862 481 481 6.09% 7.01%
B 7896 6862 338 338 4.28% 4.93%
C 7896 6862 2 2 0.03% 0.03%
D 7896 6862 854 854 10.82% 12.45%

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 2110125 13464.49 752 737 156.7
A 15 223 1923779 12275.02 752 737 156.7
A 13 248 209800 1334.48 752 737 156.7
B 0 189 1106699 7241.92 769 744 152.7
B 5 255 198816 1297.0 769 744 152.7
B 4 171 89970 584.26 769 744 152.7
C 0 207 23470 123.9 775 782 183.1
C 3 233 10733 54.34 775 782 183.1
C 14 254 10198 51.42 775 782 183.1
D 13 174 2127209 11687.52 718 700 181.9
D 13 249 1368292 7516.43 718 700 181.9
D 1 52 961848 5282.57 718 700 181.9

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