ASTROSAT CZTI

Data Quality Report

Orbit 20151220_G04_011T02_9000000226_level2

Creation date: 2016-09-06T17:56:16.885420
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/AS1G04_011T02_9000000226cztM0_level2_bc.evt modeM0/AS1G04_011T02_9000000226cztM0_level2_quad_clean.evt
Size (bytes)13,725,843,8403,649,564,800
Size12.8 GB 3.4 GB
Events in quadrant A54,188,82625,245,176
Events in quadrant B130,285,88222,329,151
Events in quadrant C61,818,03924,673,536
Events in quadrant D152,468,48021,221,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050480
B050520
C050480
D050480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03010
C03010
D03010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010941110
B014897090
C010885560
D015704470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24876318920.760563%
B2487434641218.658616%
C24875812760.512948%
D2484685940223.907304%

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 285064 248791 441 441 0.15% 0.18%
B 285064 248755 1763 1763 0.62% 0.71%
C 285064 248798 38 38 0.01% 0.02%
D 285063 248500 4335 4335 1.52% 1.74%

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 3 80 4800244 1991.68 11306 11062 2404.6
A 4 32 2787719 1154.73 11306 11062 2404.6
A 8 14 924538 379.89 11306 11062 2404.6
B 2 32 68700606 37111.16 10255 9939 1850.9
B 8 4 10110176 5456.8 10255 9939 1850.9
B 5 191 2782466 1497.9 10255 9939 1850.9
C 15 241 11504730 4937.91 10987 10781 2327.7
C 8 208 2802986 1199.56 10987 10781 2327.7
C 9 52 1789895 764.32 10987 10781 2327.7
D 13 169 61673446 28446.04 9807 9497 2167.8
D 12 22 23015455 10612.82 9807 9497 2167.8
D 10 84 16792027 7741.9 9807 9497 2167.8

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
Veto Counter