ASTROSAT CZTI

Data Quality Report

Orbit 20151114_P01_141T01_9000000100_level2

Creation date: 2017-10-31T13:18:27.609408
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/AS1P01_141T01_9000000100cztM0_level2.evt modeM0/AS1P01_141T01_9000000100cztM0_level2_quad_clean.evt
Size (bytes)5,205,571,200339,647,040
Size4.8 GB 323.9 MB
Events in quadrant A35,175,4232,135,162
Events in quadrant B36,609,0542,167,036
Events in quadrant C41,966,6802,089,120
Events in quadrant D42,079,8841,983,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05700
B05680
C05660
D05700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01242600
B01285660
C01442990
D01446310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278524081.464886%
B278084901.762083%
C277715111.840049%
D277736162.217981%

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 30021 28014 1805 1805 6.01% 6.44%
B 30021 27975 2006 2006 6.68% 7.17%
C 30021 27939 2818 2818 9.39% 10.09%
D 30021 27953 4803 4803 16.00% 17.18%

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 69 534979 241.84 8907 8978 2175.0
A 10 216 440357 198.33 8907 8978 2175.0
A 11 79 34237 11.61 8907 8978 2175.0
B 7 221 982206 447.8 9175 9250 2172.7
B 5 191 300023 133.83 9175 9250 2172.7
B 0 220 207600 91.29 9175 9250 2172.7
C 3 95 1639588 692.76 8366 8678 2354.2
C 3 31 1567152 661.99 8366 8678 2354.2
C 3 127 1333852 562.89 8366 8678 2354.2
D 0 25 10067740 3983.14 8115 8425 2525.5
D 1 4 583189 227.59 8115 8425 2525.5
D 12 233 518812 202.1 8115 8425 2525.5

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