ASTROSAT CZTI

Data Quality Report

Orbit 31530

Creation date: 2024-06-27T20:27:25.364776
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/AS1A10_101T01_9000004546_31530cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31530cztM0_level2_quad_clean.evt
Size (bytes)78,485,76018,898,560
Size74.8 MB 18.0 MB
Events in quadrant A640,630119,295
Events in quadrant B753,972126,981
Events in quadrant C468,486123,897
Events in quadrant D440,968122,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263628
B0310654
C0209543
D0207427

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113993118496234446
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1021767.443683%
B102040.392157%
C101520.197044%
D102300.000000%

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 1031 1029 52 52 5.04% 5.05%
B 1025 1024 0 0 0.00% 0.00%
C 1030 1024 0 0 0.00% 0.00%
D 1037 1033 0 0 0.00% 0.00%

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 13 213932 8726.53 110 108 24.5
A 13 254 1951 75.22 110 108 24.5
A 3 137 1128 41.63 110 108 24.5
B 6 159 300274 12513.62 113 110 24.0
B 4 80 5370 219.29 113 110 24.0
B 12 111 2835 113.6 113 110 24.0
C 3 233 19522 723.52 107 107 26.8
C 14 238 17982 666.13 107 107 26.8
C 10 22 5269 192.37 107 107 26.8
D 8 195 30857 1104.67 109 105 27.8
D 2 234 3442 119.87 109 105 27.8
D 14 226 987 31.68 109 105 27.8

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