ASTROSAT CZTI

Data Quality Report

Orbit 20170709_A03_033T01_9000001368_level2

Creation date: 2017-09-24T09:58:25.719827
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/AS1A03_033T01_9000001368cztM0_level2.evt modeM0/AS1A03_033T01_9000001368cztM0_level2_quad_clean.evt
Size (bytes)1,809,786,240346,901,760
Size1.7 GB 330.8 MB
Events in quadrant A12,375,3822,246,652
Events in quadrant B12,131,5952,249,991
Events in quadrant C11,445,8672,189,972
Events in quadrant D17,196,7472,130,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526200
B0516980
C0508300
D0677170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B05020
C05020
D05000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0490
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245886792.761510%
B245715182.108176%
C245783981.619334%
D2451315856.465957%

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 29153 24867 131 131 0.45% 0.53%
B 29153 24867 4 4 0.01% 0.02%
C 29153 24864 12 12 0.04% 0.05%
D 29153 24832 1102 1102 3.78% 4.44%

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 14 111 621631 1043.13 2985 2932 593.1
A 1 162 101039 165.41 2985 2932 593.1
A 3 1 55609 88.81 2985 2932 593.1
B 0 214 233829 414.28 2994 2928 557.4
B 0 229 124112 217.43 2994 2928 557.4
B 12 111 58476 99.66 2994 2928 557.4
C 4 254 172199 257.8 2882 2891 656.7
C 13 61 21828 28.84 2882 2891 656.7
C 9 237 19625 25.48 2882 2891 656.7
D 1 52 3882850 5608.8 2815 2748 691.8
D 8 195 1396723 2015.03 2815 2748 691.8
D 7 71 243188 347.56 2815 2748 691.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter