ASTROSAT CZTI

Data Quality Report

Orbit 13292

Creation date: 2024-06-27T16:38:53.535361
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/AS1T02_013T01_9000001976_13292cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13292cztM0_level2_quad_clean.evt
Size (bytes)693,921,60080,496,000
Size661.8 MB 76.8 MB
Events in quadrant A4,170,939568,085
Events in quadrant B7,761,503195,832
Events in quadrant C4,119,383571,457
Events in quadrant D4,414,739539,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176123
B0283982
C0176672
D0185662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80703684.560099%
B8070335141.524164%
C80702863.543990%
D80702953.655514%

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 8361 8073 1 1 0.01% 0.01%
B 8361 8072 1060 1060 12.68% 13.13%
C 8361 8073 31 31 0.37% 0.38%
D 8361 8073 46 46 0.55% 0.57%

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 15 69 116661 545.18 1026 1002 212.1
A 9 143 36891 169.17 1026 1002 212.1
A 8 15 28038 127.44 1026 1002 212.1
B 4 239 4989164 37515.99 677 658 133.0
B 10 245 40205 297.41 677 658 133.0
B 4 80 28293 207.83 677 658 133.0
C 15 208 133837 560.39 1007 1013 237.0
C 14 234 54046 223.75 1007 1013 237.0
C 13 61 7466 27.23 1007 1013 237.0
D 8 195 229896 939.36 996 966 243.7
D 1 52 204601 835.57 996 966 243.7
D 13 249 101013 410.52 996 966 243.7

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