ASTROSAT CZTI

Data Quality Report

Orbit 20151014_P01_122T01_9000000026_level2

Creation date: 2016-09-06T18:00:42.476019
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/AS1P01_122T01_9000000026cztM0_level2_bc.evt modeM0/AS1P01_122T01_9000000026cztM0_level2_quad_clean.evt
Size (bytes)1,907,346,240548,599,680
Size1.8 GB 523.2 MB
Events in quadrant A11,454,8513,278,325
Events in quadrant B11,941,7823,306,127
Events in quadrant C9,634,2443,256,507
Events in quadrant D21,098,6613,115,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01890
B01890
C01890
D01890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010880
B010860
C010880
D010880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02305750
B02287130
C02102150
D02364660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533393100.581188%
B533423600.674890%
C53331520.097504%
D533367191.348058%

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 83184 53317 119 119 0.14% 0.22%
B 83183 53308 187 187 0.22% 0.35%
C 83184 53312 16 16 0.02% 0.03%
D 83183 53315 354 354 0.43% 0.66%

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 15 127 1148073 2448.6 2232 2180 468.0
A 15 250 666547 1419.65 2232 2180 468.0
A 15 17 595592 1268.03 2232 2180 468.0
B 2 32 1894153 4562.78 2299 2220 414.6
B 0 214 420266 1008.2 2299 2220 414.6
B 10 14 171244 407.63 2299 2220 414.6
C 2 192 235523 494.56 2230 2182 471.8
C 1 1 190006 398.09 2230 2182 471.8
C 9 68 89298 184.64 2230 2182 471.8
D 1 4 7370995 15217.46 2179 2108 484.2
D 10 154 2171623 4480.26 2179 2108 484.2
D 13 7 630061 1296.78 2179 2108 484.2

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
Veto Counter