ASTROSAT CZTI

Data Quality Report

Orbit 31123

Creation date: 2024-06-27T20:23:39.122395
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_109T01_9000004492_31123cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31123cztM0_level2_quad_clean.evt
Size (bytes)537,572,160120,274,560
Size512.7 MB 114.7 MB
Events in quadrant A3,330,402815,415
Events in quadrant B5,189,290814,998
Events in quadrant C3,673,526794,687
Events in quadrant D3,659,520777,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138252
B0193112
C0149242
D0149992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6315370.585907%
B63161432.264091%
C63162293.625712%
D6316651.029132%

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 7575 6316 0 0 0.00% 0.00%
B 7576 6317 0 0 0.00% 0.00%
C 7576 6317 49 49 0.65% 0.78%
D 7576 6317 34 34 0.45% 0.54%

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 8 144 11702 63.44 860 845 171.1
A 13 254 10951 59.05 860 845 171.1
A 3 137 8178 42.85 860 845 171.1
B 6 159 1821349 11344.69 850 832 160.5
B 0 183 19564 116.73 850 832 160.5
B 12 111 19311 115.15 850 832 160.5
C 0 10 261153 1344.16 833 842 193.7
C 14 238 136404 700.0 833 842 193.7
C 2 114 14079 68.35 833 842 193.7
D 8 195 323386 1606.95 844 827 200.7
D 2 120 95188 470.1 844 827 200.7
D 12 218 33394 162.25 844 827 200.7

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