ASTROSAT CZTI

Data Quality Report

Orbit 09137

Creation date: 2024-06-27T15:41:45.298419
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/AS1G07_046T01_9000001274_09137cztM0_level2.evt modeM0/AS1G07_046T01_9000001274_09137cztM0_level2_quad_clean.evt
Size (bytes)536,679,36081,884,160
Size511.8 MB 78.1 MB
Events in quadrant A4,698,262490,221
Events in quadrant B3,776,057498,800
Events in quadrant C3,527,791486,587
Events in quadrant D3,740,382480,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01542
C01544
D01542

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018927405
B016300225
C016065227
D016641189

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74904195.594126%
B75252733.627907%
C75241852.458799%
D75412393.169341%

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 7721 7604 134 134 1.74% 1.76%
B 7721 7609 6 6 0.08% 0.08%
C 7721 7614 0 0 0.00% 0.00%
D 7721 7619 25 25 0.32% 0.33%

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 5 394283 2077.54 922 902 189.3
A 15 223 263098 1384.72 922 902 189.3
A 15 236 161928 850.42 922 902 189.3
B 0 214 132450 713.82 932 907 184.3
B 12 111 21259 110.44 932 907 184.3
B 4 80 20901 108.5 932 907 184.3
C 13 61 6744 27.42 900 905 212.9
C 14 234 6691 27.18 900 905 212.9
C 8 128 4918 18.85 900 905 212.9
D 1 52 165907 735.39 912 891 224.4
D 2 14 68658 302.0 912 891 224.4
D 7 71 27438 118.31 912 891 224.4

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