ASTROSAT CZTI

Data Quality Report

Orbit 03839

Creation date: 2024-06-27T14:34:13.566016
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_189T01_9000000492_03839cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03839cztM0_level2_quad_clean.evt
Size (bytes)679,253,76067,510,080
Size647.8 MB 64.4 MB
Events in quadrant A3,917,544399,037
Events in quadrant B4,140,437398,631
Events in quadrant C8,356,007336,490
Events in quadrant D3,643,444381,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167143
B0172472
C0300012
D0164452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75852943.876071%
B75852983.928807%
C7585195025.708635%
D75852673.520105%

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 7785 7585 3 3 0.04% 0.04%
B 7785 7585 6 6 0.08% 0.08%
C 7785 7585 1694 1694 21.76% 22.33%
D 7785 7585 22 22 0.28% 0.29%

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 15 234 280792 1463.59 924 902 191.2
A 0 50 37631 192.06 924 902 191.2
A 13 251 22243 111.6 924 902 191.2
B 15 204 401203 2200.24 929 907 181.9
B 14 167 82560 448.81 929 907 181.9
B 4 81 50532 272.77 929 907 181.9
C 1 241 5078996 27572.73 780 785 184.2
C 14 234 141325 763.08 780 785 184.2
C 2 53 35653 189.32 780 785 184.2
D 13 248 134086 609.14 894 867 218.7
D 13 223 47154 211.65 894 867 218.7
D 8 112 25900 114.46 894 867 218.7

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