ASTROSAT CZTI

Data Quality Report

Orbit 20171005_G08_039T01_9000001582_level2

Creation date: 2017-10-18T19:13:28.150084
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/AS1G08_039T01_9000001582cztM0_level2.evt modeM0/AS1G08_039T01_9000001582cztM0_level2_quad_clean.evt
Size (bytes)1,839,358,080284,662,080
Size1.7 GB 271.5 MB
Events in quadrant A13,341,9101,765,342
Events in quadrant B15,998,9771,767,614
Events in quadrant C10,843,6301,768,063
Events in quadrant D13,889,0921,657,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0557630
B0634610
C0495850
D0572470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241726852.833857%
B2417213405.543604%
C241711160.479914%
D241725092.105742%

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 26897 24176 342 342 1.27% 1.41%
B 26897 24176 667 667 2.48% 2.76%
C 26897 24176 1 1 0.00% 0.00%
D 26897 24176 320 320 1.19% 1.32%

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 8 5 1021149 1750.46 2859 2799 581.8
A 15 223 799691 1369.79 2859 2799 581.8
A 15 239 219931 373.23 2859 2799 581.8
B 4 239 4157299 7728.72 2853 2785 537.5
B 15 204 360089 664.7 2853 2785 537.5
B 4 81 132826 241.92 2853 2785 537.5
C 13 61 21043 28.62 2771 2783 638.0
C 12 4 13554 16.88 2771 2783 638.0
C 14 67 12418 15.1 2771 2783 638.0
D 8 195 1343250 2023.43 2741 2659 662.5
D 13 152 638895 960.31 2741 2659 662.5
D 1 52 532814 800.19 2741 2659 662.5

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