ASTROSAT CZTI

Data Quality Report

Orbit 20190724_A05_103T06_9000003056_level2

Creation date: 2019-07-25T12:49:09.905941
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/AS1A05_103T06_9000003056cztM0_level2_bc.evt modeM0/AS1A05_103T06_9000003056cztM0_level2_quad_clean.evt
Size (bytes)530,127,360211,089,600
Size505.6 MB 201.3 MB
Events in quadrant A3,113,6741,407,512
Events in quadrant B3,284,7431,404,180
Events in quadrant C2,929,7251,330,300
Events in quadrant D5,779,8571,298,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292500
B0298960
C0291130
D0374970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138022141.550500%
B138012101.521629%
C138022581.869294%
D138023322.405448%

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 17512 13802 0 0 0.00% 0.00%
B 17512 13802 1 1 0.01% 0.01%
C 17512 13802 0 0 0.00% 0.00%
D 17512 13802 54 54 0.31% 0.39%

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 13 210 37847 212.13 793 780 174.7
A 13 252 16037 87.32 793 780 174.7
A 5 16 9300 48.76 793 780 174.7
B 0 197 43090 277.71 791 773 152.4
B 0 244 36176 232.34 791 773 152.4
B 0 189 20859 131.82 791 773 152.4
C 7 247 41887 232.68 744 741 176.8
C 3 233 13716 73.37 744 741 176.8
C 8 208 9341 48.63 744 741 176.8
D 1 239 1338177 7467.25 766 740 179.1
D 1 52 852709 4756.76 766 740 179.1
D 1 20 332180 1850.51 766 740 179.1

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