ASTROSAT CZTI

Data Quality Report

Orbit 07819

Creation date: 2024-06-27T15:24:25.828934
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/AS1G06_077T02_9000001076_07819cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07819cztM0_level2_quad_clean.evt
Size (bytes)482,636,16083,361,600
Size460.3 MB 79.5 MB
Events in quadrant A3,057,221516,590
Events in quadrant B3,433,299531,644
Events in quadrant C3,767,018514,909
Events in quadrant D3,911,020501,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135782
B0144191
C0156773
D0161111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65941392.107977%
B65941952.957234%
C65933024.580616%
D65942133.230209%

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 7059 6594 6 6 0.08% 0.09%
B 7059 6594 35 35 0.50% 0.53%
C 7059 6593 158 158 2.24% 2.40%
D 7059 6594 83 83 1.18% 1.26%

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 0 128 36654 227.69 780 763 157.6
A 15 174 9549 55.74 780 763 157.6
A 0 226 7303 41.49 780 763 157.6
B 10 246 232313 1559.2 784 763 148.5
B 4 239 60976 405.46 784 763 148.5
B 0 219 50495 334.88 784 763 148.5
C 9 54 757153 4366.26 749 753 173.2
C 1 16 46020 261.3 749 753 173.2
C 14 234 33519 189.14 749 753 173.2
D 2 152 645460 3455.2 765 743 186.6
D 7 71 118012 628.47 765 743 186.6
D 5 233 67531 357.93 765 743 186.6

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