ASTROSAT CZTI

Data Quality Report

Orbit 00915

Creation date: 2024-06-27T14:04:39.713803
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/AS1P01_161T02_9000000184_00915cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00915cztM0_level2_quad_clean.evt
Size (bytes)448,980,48037,503,360
Size428.2 MB 35.8 MB
Events in quadrant A3,072,718247,542
Events in quadrant B3,564,638241,259
Events in quadrant C3,237,648240,866
Events in quadrant D3,560,893231,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0500
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108280
B0123010
C0113280
D0122870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241440.165700%
B2404793.286190%
C2416100.413907%
D2410602.489627%

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 3139 2435 150 150 4.78% 6.16%
B 3138 2425 364 364 11.60% 15.01%
C 3138 2430 173 173 5.51% 7.12%
D 3137 2424 372 372 11.86% 15.35%

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 15 127 20377 101.42 795 799 193.0
A 11 79 2838 10.56 795 799 193.0
A 3 111 2403 8.31 795 799 193.0
B 3 0 279326 1427.7 820 819 195.1
B 7 221 45922 231.21 820 819 195.1
B 15 22 30977 154.6 820 819 195.1
C 15 241 139526 629.75 780 808 220.3
C 7 159 12812 54.5 780 808 220.3
C 3 111 10226 42.76 780 808 220.3
D 12 188 348758 1507.27 749 775 230.9
D 1 4 281535 1216.1 749 775 230.9
D 13 88 72317 309.88 749 775 230.9

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