ASTROSAT CZTI

Data Quality Report

Orbit 30721

Creation date: 2024-06-27T20:18:50.994042
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_071T44_9000004434_30721cztM0_level2.evt modeM0/AS1A10_071T44_9000004434_30721cztM0_level2_quad_clean.evt
Size (bytes)815,135,040113,489,280
Size777.4 MB 108.2 MB
Events in quadrant A4,263,807757,129
Events in quadrant B6,953,173734,091
Events in quadrant C4,966,097708,241
Events in quadrant D7,969,650686,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175362
B0260942
C0197652
D0292832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79082973.755690%
B79086608.345979%
C79085967.536672%
D79095817.346061%

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 7933 7909 16 16 0.20% 0.20%
B 7933 7908 154 154 1.94% 1.95%
C 7933 7908 151 151 1.90% 1.91%
D 7934 7909 287 287 3.62% 3.63%

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 13 157628 742.62 1038 1014 210.9
A 8 192 99640 467.66 1038 1014 210.9
A 13 254 15144 67.0 1038 1014 210.9
B 6 159 2156201 10969.54 1002 978 196.5
B 5 255 425719 2161.82 1002 978 196.5
B 6 36 290237 1472.26 1002 978 196.5
C 10 22 782894 3371.37 975 979 231.9
C 3 233 206021 884.07 975 979 231.9
C 14 238 153686 658.42 975 979 231.9
D 8 195 3282412 13779.13 990 965 238.1
D 13 174 266389 1114.54 990 965 238.1
D 13 249 265192 1109.52 990 965 238.1

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