ASTROSAT CZTI

Data Quality Report

Orbit 07463

Creation date: 2024-06-27T15:20:04.949210
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/AS1A02_108T01_9000001024_07463cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07463cztM0_level2_quad_clean.evt
Size (bytes)1,025,078,400182,030,400
Size977.6 MB 173.6 MB
Events in quadrant A7,252,5631,115,333
Events in quadrant B7,412,9421,138,034
Events in quadrant C7,067,2141,112,103
Events in quadrant D8,245,3491,060,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321934
B0324073
C0320083
D0345323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157581340.850362%
B157581260.799594%
C157581150.729788%
D157582871.821297%

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 18033 15761 0 0 0.00% 0.00%
B 18033 15761 2 2 0.01% 0.01%
C 18033 15760 3 3 0.02% 0.02%
D 18033 15761 134 134 0.74% 0.85%

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 15 239 171813 458.27 1827 1784 371.0
A 3 1 19878 48.77 1827 1784 371.0
A 0 226 17174 41.48 1827 1784 371.0
B 0 214 185040 523.51 1841 1796 350.0
B 12 111 37195 101.13 1841 1796 350.0
B 11 111 29950 80.43 1841 1796 350.0
C 1 16 35230 80.9 1787 1792 413.3
C 9 68 19714 43.36 1787 1792 413.3
C 8 128 16630 35.9 1787 1792 413.3
D 2 14 591899 1348.04 1775 1718 437.8
D 12 221 437531 995.45 1775 1718 437.8
D 8 195 175162 396.17 1775 1718 437.8

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