ASTROSAT CZTI

Data Quality Report

Orbit 03883

Creation date: 2024-06-27T14:34:46.462701
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_083T01_9000000494_03883cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03883cztM0_level2_quad_clean.evt
Size (bytes)521,714,880107,959,680
Size497.5 MB 103.0 MB
Events in quadrant A3,747,150686,236
Events in quadrant B3,919,214691,167
Events in quadrant C3,609,091684,841
Events in quadrant D3,987,065657,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169312
B0170241
C0166241
D0180501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79052042.580645%
B79051341.695130%
C7905780.986717%
D79052523.187856%

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 7905 7905 13 13 0.16% 0.16%
B 7905 7905 4 4 0.05% 0.05%
C 7905 7905 0 0 0.00% 0.00%
D 7905 7905 150 150 1.90% 1.90%

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 0 118 157912 837.64 904 881 187.5
A 0 50 61548 323.61 904 881 187.5
A 0 226 23077 118.4 904 881 187.5
B 15 204 212491 1193.48 909 884 177.3
B 5 172 85786 478.85 909 884 177.3
B 15 54 46647 258.11 909 884 177.3
C 2 53 123323 603.25 875 875 203.0
C 8 128 19794 93.21 875 875 203.0
C 14 67 19628 92.39 875 875 203.0
D 12 79 311174 1471.25 871 844 210.9
D 2 232 167882 791.92 871 844 210.9
D 13 239 51079 238.16 871 844 210.9

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
Veto Counter