ASTROSAT CZTI

Data Quality Report

Orbit 28823

Creation date: 2024-06-27T19:56:50.247955
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_121T01_9000004134_28823cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28823cztM0_level2_quad_clean.evt
Size (bytes)800,717,760108,126,720
Size763.6 MB 103.1 MB
Events in quadrant A3,322,422741,143
Events in quadrant B3,407,286759,108
Events in quadrant C4,594,631720,709
Events in quadrant D12,453,748565,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143741
B0145271
C0183601
D0418391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69791892.708124%
B69792113.023356%
C69793054.370254%
D6979328847.112767%

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 7389 6979 0 0 0.00% 0.00%
B 7389 6979 2 2 0.03% 0.03%
C 7389 6979 3 3 0.04% 0.04%
D 7389 6979 3093 3093 41.86% 44.32%

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 13653 74.3 854 836 172.5
A 14 235 12624 68.33 854 836 172.5
A 3 137 8056 41.85 854 836 172.5
B 15 219 23258 141.16 847 825 158.9
B 12 111 18850 113.42 847 825 158.9
B 0 156 17613 105.64 847 825 158.9
C 3 233 1168825 6137.76 822 826 190.3
C 14 238 150751 787.85 822 826 190.3
C 14 254 28345 144.61 822 826 190.3
D 8 195 6906353 41340.96 704 686 167.0
D 1 52 2458170 14711.79 704 686 167.0
D 13 104 213460 1273.78 704 686 167.0

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