ASTROSAT CZTI

Data Quality Report

Orbit 20725

Creation date: 2024-06-27T18:18:47.642389
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/AS1A05_165T07_9000003062_20725cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20725cztM0_level2_quad_clean.evt
Size (bytes)472,285,440100,103,040
Size450.4 MB 95.5 MB
Events in quadrant A3,324,369665,864
Events in quadrant B3,581,771657,672
Events in quadrant C3,347,520635,140
Events in quadrant D3,618,732630,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139562
B0146982
C0141262
D0148933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347861.354971%
B63471251.969434%
C63471422.237277%
D63461081.701859%

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 7512 6347 0 0 0.00% 0.00%
B 7512 6347 32 32 0.43% 0.50%
C 7512 6347 0 0 0.00% 0.00%
D 7511 6346 27 27 0.36% 0.43%

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 8 205 7899 40.95 861 844 172.3
A 0 226 7524 38.78 861 844 172.3
A 3 137 6536 33.04 861 844 172.3
B 7 220 216504 1374.1 841 825 157.0
B 3 64 22788 139.93 841 825 157.0
B 0 197 21887 134.19 841 825 157.0
C 14 238 130294 691.01 814 821 187.4
C 8 208 18648 95.14 814 821 187.4
C 3 233 10519 51.76 814 821 187.4
D 5 222 235240 1180.81 836 815 198.5
D 1 20 99155 495.34 836 815 198.5
D 1 52 41464 204.75 836 815 198.5

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