ASTROSAT CZTI

Data Quality Report

Orbit 03916

Creation date: 2024-06-27T14:35:11.426796
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_172T01_9000000502_03916cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03916cztM0_level2_quad_clean.evt
Size (bytes)1,306,837,440195,808,320
Size1.2 GB 186.7 MB
Events in quadrant A9,353,5461,184,940
Events in quadrant B9,673,7211,185,306
Events in quadrant C7,642,3821,193,144
Events in quadrant D11,695,7841,130,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03662
D03664

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040429136
B040579107
C03637683
D047696251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179324792.671202%
B179373441.917823%
C17939450.250850%
D1791910415.809476%

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 19624 17981 297 297 1.51% 1.65%
B 19624 17980 204 204 1.04% 1.13%
C 19624 17982 1 1 0.01% 0.01%
D 19624 17973 899 899 4.58% 5.00%

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 687338 1698.89 1983 1937 403.4
A 0 118 548424 1354.57 1983 1937 403.4
A 2 79 108921 265.18 1983 1937 403.4
B 15 204 833649 2138.85 2011 1963 388.8
B 10 16 678535 1739.94 2011 1963 388.8
B 5 172 144109 365.56 2011 1963 388.8
C 8 128 32141 67.07 1931 1935 450.4
C 10 65 23045 46.87 1931 1935 450.4
C 13 61 16388 32.09 1931 1935 450.4
D 2 232 2376556 5247.89 1880 1824 452.5
D 9 82 981963 2166.0 1880 1824 452.5
D 12 233 287370 631.02 1880 1824 452.5

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