ASTROSAT CZTI

Data Quality Report

Orbit 20151023_P01_161T03_9000000054_level2

Creation date: 2016-09-06T18:00:06.847245
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_161T03_9000000054cztM0_level2_bc.evt modeM0/AS1P01_161T03_9000000054cztM0_level2_quad_clean.evt
Size (bytes)288,034,56087,223,680
Size274.7 MB 83.2 MB
Events in quadrant A2,344,959535,000
Events in quadrant B2,259,655536,691
Events in quadrant C1,403,605536,866
Events in quadrant D2,203,875517,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357960
B0347450
C0294820
D0315660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7393690.933315%
B73931892.556472%
C739350.067632%
D7393130.175842%

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 11882 7393 8 8 0.07% 0.11%
B 11882 7393 25 25 0.21% 0.34%
C 11882 7393 0 0 0.00% 0.00%
D 11882 7393 2 2 0.02% 0.03%

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 12 149 329078 4777.22 322 315 68.8
A 0 69 259941 3772.6 322 315 68.8
A 15 127 186843 2710.42 322 315 68.8
B 2 2 542719 8876.63 328 318 61.1
B 0 230 185117 3024.32 328 318 61.1
B 0 207 76134 1240.76 328 318 61.1
C 1 1 84744 1237.87 318 314 68.2
C 14 206 25920 375.42 318 314 68.2
C 9 206 7731 108.74 318 314 68.2
D 7 85 384843 5419.35 315 306 71.0
D 1 5 157933 2221.46 315 306 71.0
D 13 216 59294 831.33 315 306 71.0

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