ASTROSAT CZTI

Data Quality Report

Orbit 46145

Creation date: 2024-06-27T23:19:39.771178
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_098T02_9000006174_46145cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46145cztM0_level2_quad_clean.evt
Size (bytes)679,616,640120,648,960
Size648.1 MB 115.1 MB
Events in quadrant A7,391,877782,859
Events in quadrant B5,624,055829,007
Events in quadrant C3,853,397835,212
Events in quadrant D7,681,082660,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269885
B0219762
C0170482
D0282082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78384856.187803%
B78384956.315387%
C7838640.816535%
D7838119615.258995%

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 7853 7839 138 138 1.76% 1.76%
B 7853 7839 176 176 2.24% 2.25%
C 7853 7839 13 13 0.17% 0.17%
D 7853 7839 917 917 11.68% 11.70%

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 10 83 3283272 17551.52 892 871 187.0
A 0 247 518051 2765.44 892 871 187.0
A 9 191 51432 270.36 892 871 187.0
B 3 112 1870375 10231.9 906 877 182.7
B 5 185 46471 249.54 906 877 182.7
B 0 155 46100 247.51 906 877 182.7
C 12 2 136586 621.89 904 908 218.2
C 3 9 83151 376.96 904 908 218.2
C 2 14 65088 294.17 904 908 218.2
D 5 235 1826144 8482.59 838 810 215.2
D 2 37 1763182 8190.0 838 810 215.2
D 13 249 191884 887.95 838 810 215.2

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