ASTROSAT CZTI

Data Quality Report

Orbit 37820

Creation date: 2024-06-27T21:44:53.954798
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/AS1T05_054T01_9000005350_37820cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37820cztM0_level2_quad_clean.evt
Size (bytes)423,345,60078,644,160
Size403.7 MB 75.0 MB
Events in quadrant A2,910,691502,554
Events in quadrant B3,193,478506,078
Events in quadrant C3,024,336508,508
Events in quadrant D3,319,547480,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119653
B0129012
C0122762
D0135112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5489330.601202%
B54891021.858262%
C5489400.728730%
D54891993.625433%

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 7162 5490 14 14 0.20% 0.26%
B 7162 5490 69 69 0.96% 1.26%
C 7162 5490 25 25 0.35% 0.46%
D 7162 5490 167 167 2.33% 3.04%

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 347910 2704.28 634 622 128.4
A 9 143 73647 568.63 634 622 128.4
A 10 255 13321 98.89 634 622 128.4
B 0 229 263592 2182.62 629 614 120.5
B 4 171 127605 1053.98 629 614 120.5
B 0 189 114328 943.78 629 614 120.5
C 15 214 251847 1734.09 622 625 144.9
C 15 159 139265 956.98 622 625 144.9
C 0 10 129720 891.09 622 625 144.9
D 2 249 354189 2341.64 613 596 151.0
D 10 253 190408 1257.02 613 596 151.0
D 13 249 119824 789.58 613 596 151.0

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