ASTROSAT CZTI

Data Quality Report

Orbit 45706

Creation date: 2024-06-27T23:15:14.531595
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_028T01_9000006122_45706cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45706cztM0_level2_quad_clean.evt
Size (bytes)466,009,920117,619,200
Size444.4 MB 112.2 MB
Events in quadrant A5,896,721801,713
Events in quadrant B3,394,024827,814
Events in quadrant C3,278,951795,424
Events in quadrant D4,170,671678,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213351
B0139851
C0139821
D0166061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65641942.955515%
B65651241.888804%
C6565911.386139%
D65654717.174410%

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 7754 6564 4 4 0.05% 0.06%
B 7755 6565 21 21 0.27% 0.32%
C 7755 6565 27 27 0.35% 0.41%
D 7755 6565 377 377 4.86% 5.74%

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 2760659 16851.44 801 784 163.8
A 13 248 18574 108.62 801 784 163.8
A 13 254 11933 68.07 801 784 163.8
B 5 172 62221 397.25 796 772 154.7
B 3 112 52637 335.29 796 772 154.7
B 5 250 37954 240.37 796 772 154.7
C 14 254 99843 535.08 788 795 185.1
C 0 207 44523 236.23 788 795 185.1
C 1 241 35140 185.54 788 795 185.1
D 13 249 977111 5146.67 758 733 189.7
D 2 249 117317 614.54 758 733 189.7
D 1 52 55925 290.93 758 733 189.7

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