ASTROSAT CZTI

Data Quality Report

Orbit 20190926_A05_094T01_9000003204_level2

Creation date: 2019-10-03T16:45:19.984729
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_094T01_9000003204cztM0_level2_bc.evt modeM0/AS1A05_094T01_9000003204cztM0_level2_quad_clean.evt
Size (bytes)6,565,947,8402,396,764,800
Size6.1 GB 2.2 GB
Events in quadrant A43,336,12415,291,900
Events in quadrant B41,392,68015,612,396
Events in quadrant C35,592,29515,126,564
Events in quadrant D66,536,57814,500,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03857830
B03800550
C03662240
D04714090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02890
C02890
D02890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035980
B035980
C035980
D035980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17612646432.636181%
B17612625851.467699%
C17612626771.519935%
D17612691655.203661%

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 205390 176130 1385 1385 0.67% 0.79%
B 205390 176127 82 82 0.04% 0.05%
C 205390 176124 2 2 0.00% 0.00%
D 205390 176115 1900 1900 0.93% 1.08%

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 15 236 6581366 3257.47 9376 9216 2017.6
A 5 16 560210 273.1 9376 9216 2017.6
A 13 254 232698 110.77 9376 9216 2017.6
B 3 64 1425409 792.83 9530 9299 1786.2
B 0 229 503277 276.56 9530 9299 1786.2
B 0 190 501943 275.81 9530 9299 1786.2
C 9 54 231584 103.3 9153 9110 2153.7
C 0 207 63556 25.28 9153 9110 2153.7
C 13 61 53757 20.73 9153 9110 2153.7
D 1 52 18571182 8707.03 9107 8767 2131.9
D 7 238 3921263 1835.23 9107 8767 2131.9
D 2 136 2014531 940.84 9107 8767 2131.9

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