ASTROSAT CZTI

Data Quality Report

Orbit 14258

Creation date: 2024-06-27T16:52:35.015792
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/AS1G08_014T01_9000002104_14258cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14258cztM0_level2_quad_clean.evt
Size (bytes)481,898,88075,556,800
Size459.6 MB 72.1 MB
Events in quadrant A3,247,546473,942
Events in quadrant B3,533,387474,979
Events in quadrant C3,411,921451,744
Events in quadrant D3,971,124444,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133022
B0142921
C0135311
D0157371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63351322.083662%
B63351632.573007%
C6335811.278611%
D63351342.115233%

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 7501 6337 2 2 0.03% 0.03%
B 7501 6337 23 23 0.31% 0.36%
C 7501 6337 0 0 0.00% 0.00%
D 7501 6336 24 24 0.32% 0.38%

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 15 34555 203.18 825 809 166.1
A 12 189 21498 124.57 825 809 166.1
A 9 143 12096 67.96 825 809 166.1
B 0 229 178886 1150.73 809 791 154.8
B 10 245 45545 289.17 809 791 154.8
B 10 244 42836 271.67 809 791 154.8
C 3 233 346631 1913.54 785 789 180.7
C 13 61 5661 26.96 785 789 180.7
C 10 22 5526 26.21 785 789 180.7
D 8 195 332644 1775.1 794 775 187.0
D 10 199 208666 1111.97 794 775 187.0
D 5 222 197640 1052.99 794 775 187.0

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