ASTROSAT CZTI

Data Quality Report

Orbit 44994

Creation date: 2024-06-27T23:08:50.200825
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_020T01_9000006040_44994cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_44994cztM0_level2_quad_clean.evt
Size (bytes)586,543,68097,623,360
Size559.4 MB 93.1 MB
Events in quadrant A8,770,910596,446
Events in quadrant B3,121,821699,010
Events in quadrant C2,864,547680,923
Events in quadrant D6,494,551563,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301304
B0130621
C0126131
D0233821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5942114219.219118%
B59431312.204274%
C5943921.548040%
D594378513.208817%

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 7047 5943 978 978 13.88% 16.46%
B 7048 5944 14 14 0.20% 0.24%
C 7048 5944 22 22 0.31% 0.37%
D 7048 5944 645 645 9.15% 10.85%

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 0 247 3632407 25997.85 675 660 139.7
A 10 83 2104057 15057.16 675 660 139.7
A 0 226 280841 2005.67 675 660 139.7
B 5 255 98959 722.58 695 676 136.0
B 10 3 50249 364.46 695 676 136.0
B 0 155 41264 298.41 695 676 136.0
C 14 254 52465 320.22 691 696 161.7
C 1 3 52240 318.83 691 696 161.7
C 11 16 50752 309.62 691 696 161.7
D 11 241 1687222 10228.23 659 640 164.9
D 13 249 1451449 8798.39 659 640 164.9
D 5 171 229055 1385.22 659 640 164.9

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