ASTROSAT CZTI

Data Quality Report

Orbit 20170324_G06_168T22_9000001108_level2

Creation date: 2017-09-23T12:21:33.856048
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/AS1G06_168T22_9000001108cztM0_level2.evt modeM0/AS1G06_168T22_9000001108cztM0_level2_quad_clean.evt
Size (bytes)491,037,12086,333,760
Size468.3 MB 82.3 MB
Events in quadrant A3,637,043541,376
Events in quadrant B3,218,505561,036
Events in quadrant C2,793,990566,657
Events in quadrant D4,788,564500,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156130
B0140040
C0130050
D0186760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375991.552941%
B6375991.552941%
C6375110.172549%
D63755148.062745%

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 7580 6376 8 8 0.11% 0.13%
B 7580 6376 35 35 0.46% 0.55%
C 7580 6376 0 0 0.00% 0.00%
D 7580 6376 477 477 6.29% 7.48%

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 79 793976 5439.81 716 700 145.8
A 4 2 79526 540.54 716 700 145.8
A 13 14 7224 44.74 716 700 145.8
B 4 239 173118 1255.22 723 706 137.4
B 4 81 135193 979.11 723 706 137.4
B 5 250 48983 351.47 723 706 137.4
C 1 16 47451 288.65 703 706 161.9
C 13 61 5308 28.42 703 706 161.9
C 12 4 2764 12.71 703 706 161.9
D 1 52 1913228 10939.41 665 647 174.8
D 2 136 119983 682.57 665 647 174.8
D 2 14 89421 507.76 665 647 174.8

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