ASTROSAT CZTI

Data Quality Report

Orbit 20160702_G05_195T01_9000000530_level2

Creation date: 2016-09-06T17:48:35.819592
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/AS1G05_195T01_9000000530cztM0_level2_bc.evt modeM0/AS1G05_195T01_9000000530cztM0_level2_quad_clean.evt
Size (bytes)2,967,497,280836,991,360
Size2.8 GB 798.2 MB
Events in quadrant A17,298,0105,291,485
Events in quadrant B22,251,2155,210,986
Events in quadrant C13,744,2335,234,165
Events in quadrant D31,906,7164,911,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014020
B014000
C013940
D013980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01040
C01030
D01070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01553180
B01697130
C01440700
D01980150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6850216632.427666%
B6849832214.702327%
C685408031.171579%
D68497829712.112939%

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 80939 68710 35 35 0.04% 0.05%
B 80939 68678 970 970 1.20% 1.41%
C 80938 68744 6 6 0.01% 0.01%
D 80939 68680 5171 5171 6.39% 7.53%

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 0 50 1861671 2542.97 3264 3197 730.8
A 0 199 1478547 2018.74 3264 3197 730.8
A 8 15 332394 450.44 3264 3197 730.8
B 10 16 5236136 8326.66 3244 3150 628.5
B 15 204 2060136 3273.05 3244 3150 628.5
B 4 48 550083 870.27 3244 3150 628.5
C 9 144 1073209 1488.09 3196 3140 719.1
C 10 65 66198 87.69 3196 3140 719.1
C 12 4 30733 38.37 3196 3140 719.1
D 2 37 13049839 17561.72 3110 2986 742.9
D 13 53 3039098 4086.76 3110 2986 742.9
D 4 95 795179 1066.33 3110 2986 742.9

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