ASTROSAT CZTI

Data Quality Report

Orbit 04157

Creation date: 2024-06-27T14:38:11.302089
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_240T01_9000000536_04157cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04157cztM0_level2_quad_clean.evt
Size (bytes)485,556,48077,713,920
Size463.1 MB 74.1 MB
Events in quadrant A3,657,778466,290
Events in quadrant B3,661,152467,858
Events in quadrant C3,389,607458,201
Events in quadrant D3,491,640443,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157943
B0158182
C0153632
D0157712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74301361.830417%
B74301451.951548%
C7430941.265141%
D7430901.211306%

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 8990 7432 9 9 0.10% 0.12%
B 8990 7432 11 11 0.12% 0.15%
C 8990 7432 1 1 0.01% 0.01%
D 8990 7432 16 16 0.18% 0.22%

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 0 199 98676 535.99 886 866 182.5
A 8 15 55005 296.68 886 866 182.5
A 3 1 43754 235.02 886 866 182.5
B 10 16 43430 245.6 896 876 173.3
B 4 48 42012 237.42 896 876 173.3
B 14 167 36149 203.58 896 876 173.3
C 7 222 19497 91.85 860 862 202.9
C 12 4 7271 31.59 860 862 202.9
C 13 61 6957 30.04 860 862 202.9
D 10 172 97142 459.31 858 833 209.7
D 2 232 34377 159.98 858 833 209.7
D 2 14 30825 143.04 858 833 209.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter