ASTROSAT CZTI

Data Quality Report

Orbit 20170209_A02_150T03_9000001018_level2

Creation date: 2017-09-23T02:33:35.921445
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/AS1A02_150T03_9000001018cztM0_level2.evt modeM0/AS1A02_150T03_9000001018cztM0_level2_quad_clean.evt
Size (bytes)1,288,350,720232,372,800
Size1.2 GB 221.6 MB
Events in quadrant A7,715,2011,548,773
Events in quadrant B8,156,6661,580,793
Events in quadrant C7,538,5661,541,449
Events in quadrant D14,493,5941,230,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342270
B0353320
C0339000
D0545820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B12513186377920
C12513186377920
D12513186377920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164861210.733956%
B164871881.140292%
C16482660.400437%
D16483278416.890129%

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 36861 16501 1 1 0.00% 0.01%
B 36862 16504 11 11 0.03% 0.07%
C 36862 16497 2 2 0.01% 0.01%
D 36862 16495 2575 2575 6.99% 15.61%

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 1 54097 131.18 1979 1943 397.6
A 0 226 19241 43.51 1979 1943 397.6
A 13 248 19181 43.36 1979 1943 397.6
B 11 51 126160 328.34 2007 1958 378.3
B 0 214 112742 292.86 2007 1958 378.3
B 0 187 68102 174.85 2007 1958 378.3
C 1 16 28920 60.78 1922 1933 444.0
C 13 61 15008 29.45 1922 1933 444.0
C 12 4 12180 23.08 1922 1933 444.0
D 13 105 7046805 17188.92 1675 1624 409.9
D 5 233 250345 606.83 1675 1624 409.9
D 2 216 193266 467.57 1675 1624 409.9

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