ASTROSAT CZTI

Data Quality Report

Orbit 03637

Creation date: 2024-06-27T14:31:50.015386
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/AS1G05_234T02_9000000474_03637cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03637cztM0_level2_quad_clean.evt
Size (bytes)509,978,88089,821,440
Size486.4 MB 85.7 MB
Events in quadrant A3,418,973557,122
Events in quadrant B4,221,538552,548
Events in quadrant C3,762,927551,518
Events in quadrant D3,538,075542,855

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156832
B0176891
C0165651
D0160111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7414981.321824%
B7414801.079040%
C7414530.714864%
D7414620.836256%

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 7689 7415 58 58 0.75% 0.78%
B 7689 7415 3 3 0.04% 0.04%
C 7689 7415 31 31 0.40% 0.42%
D 7689 7415 47 47 0.61% 0.63%

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 0 149 157263 918.71 826 806 170.3
A 0 50 23342 132.33 826 806 170.3
A 0 226 23225 131.64 826 806 170.3
B 15 204 684804 4192.76 842 819 163.1
B 14 167 99338 603.91 842 819 163.1
B 3 0 34936 209.13 842 819 163.1
C 2 53 438194 2299.27 814 815 190.2
C 9 247 109106 569.28 814 815 190.2
C 1 0 9265 44.42 814 815 190.2
D 13 46 156010 782.44 812 785 198.4
D 13 239 59159 294.25 812 785 198.4
D 14 34 46330 229.58 812 785 198.4

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
Veto Counter