ASTROSAT CZTI

Data Quality Report

Orbit 03492

Creation date: 2024-06-27T14:30:05.807622
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_245T01_9000000460_03492cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03492cztM0_level2_quad_clean.evt
Size (bytes)546,822,72085,527,360
Size521.5 MB 81.6 MB
Events in quadrant A4,600,589515,446
Events in quadrant B3,856,459520,084
Events in quadrant C4,179,800513,244
Events in quadrant D3,400,699505,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191945
B0167064
C0179974
D0162584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76953544.600390%
B76951692.196231%
C76952823.664717%
D7695490.636777%

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 7825 7698 223 223 2.85% 2.90%
B 7825 7698 34 34 0.43% 0.44%
C 7825 7698 173 173 2.21% 2.25%
D 7825 7698 20 20 0.26% 0.26%

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 50 1277488 7218.04 856 833 176.9
A 8 15 13137 69.57 856 833 176.9
A 12 194 9001 46.18 856 833 176.9
B 15 204 210303 1231.52 878 855 170.1
B 4 81 187764 1098.99 878 855 170.1
B 0 229 20344 114.59 878 855 170.1
C 7 220 661528 3372.27 837 841 195.9
C 1 16 81347 410.92 837 841 195.9
C 1 192 48777 244.67 837 841 195.9
D 13 223 150399 725.54 842 816 206.2
D 13 239 21302 99.37 842 816 206.2
D 3 247 18910 87.76 842 816 206.2

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
Veto Counter