ASTROSAT CZTI

Data Quality Report

Orbit 12983

Creation date: 2024-06-27T16:34:44.597919
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_055T01_9000001912_12983cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12983cztM0_level2_quad_clean.evt
Size (bytes)512,242,560102,758,400
Size488.5 MB 98.0 MB
Events in quadrant A3,279,857687,008
Events in quadrant B5,078,218645,499
Events in quadrant C3,125,159695,970
Events in quadrant D3,612,653653,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134173
B0191422
C0129842
D0145122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6155220.357433%
B615591714.898457%
C6155160.259951%
D6155701.137287%

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 7521 6157 0 0 0.00% 0.00%
B 7521 6157 345 345 4.59% 5.60%
C 7521 6157 0 0 0.00% 0.00%
D 7521 6157 66 66 0.88% 1.07%

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 12 189 118727 740.4 800 785 159.3
A 1 162 23086 140.0 800 785 159.3
A 8 15 19154 115.32 800 785 159.3
B 0 85 1078178 8173.7 722 706 131.8
B 4 239 995036 7542.98 722 706 131.8
B 3 64 52819 395.33 722 706 131.8
C 13 61 5804 27.36 799 805 182.7
C 0 207 4916 22.5 799 805 182.7
C 14 234 4679 21.2 799 805 182.7
D 1 52 386001 2097.68 784 766 183.6
D 13 104 159500 864.34 784 766 183.6
D 8 195 74973 404.07 784 766 183.6

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