ASTROSAT CZTI

Data Quality Report

Orbit 20170729_G07_027T01_9000001414_level2

Creation date: 2017-09-24T12:47:07.122311
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_027T01_9000001414cztM0_level2.evt modeM0/AS1G07_027T01_9000001414cztM0_level2_quad_clean.evt
Size (bytes)1,310,420,160216,112,320
Size1.2 GB 206.1 MB
Events in quadrant A8,443,6561,397,760
Events in quadrant B7,485,1011,420,253
Events in quadrant C7,005,5111,389,787
Events in quadrant D15,707,1981,269,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353610
B0323190
C0314460
D0567850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154793532.280509%
B154762631.699406%
C154791871.208088%
D15476175711.353063%

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 17336 15481 102 102 0.59% 0.66%
B 17336 15481 28 28 0.16% 0.18%
C 17336 15481 0 0 0.00% 0.00%
D 17336 15481 1937 1937 11.17% 12.51%

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 1367354 3691.18 1826 1783 370.0
A 15 174 32318 82.54 1826 1783 370.0
A 0 226 16596 40.04 1826 1783 370.0
B 0 214 69838 193.23 1839 1799 352.1
B 0 197 58151 160.04 1839 1799 352.1
B 0 85 54203 148.82 1839 1799 352.1
C 14 67 20915 46.22 1788 1799 413.6
C 13 61 13458 28.19 1788 1799 413.6
C 14 234 7716 14.31 1788 1799 413.6
D 1 52 6714477 15897.26 1727 1684 422.3
D 8 195 1186583 2806.08 1727 1684 422.3
D 2 16 794055 1876.5 1727 1684 422.3

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