ASTROSAT CZTI

Data Quality Report

Orbit 20161209_G06_134T11_9000000870_level2

Creation date: 2017-09-21T12:10:15.677048
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_134T11_9000000870cztM0_level2.evt modeM0/AS1G06_134T11_9000000870cztM0_level2_quad_clean.evt
Size (bytes)2,134,123,200466,943,040
Size2.0 GB 445.3 MB
Events in quadrant A14,980,8872,995,739
Events in quadrant B15,254,7343,074,597
Events in quadrant C14,187,0582,996,554
Events in quadrant D18,003,9792,834,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06680
B06680
C06680
D06680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0679250
B0680230
C0666600
D0763190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326214811.474510%
B326212610.800098%
C32621850.260568%
D326215641.728948%

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 39600 32626 17 17 0.04% 0.05%
B 39600 32626 33 33 0.08% 0.10%
C 39600 32626 0 0 0.00% 0.00%
D 39600 32626 308 308 0.78% 0.94%

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 444783 593.47 3739 3664 743.3
A 8 15 117597 153.28 3739 3664 743.3
A 0 226 36489 44.16 3739 3664 743.3
B 4 81 145788 203.95 3768 3683 696.8
B 0 219 112864 156.7 3768 3683 696.8
B 4 80 108373 150.25 3768 3683 696.8
C 1 16 87112 102.55 3603 3621 814.1
C 13 61 29077 31.27 3603 3621 814.1
C 14 67 23701 24.66 3603 3621 814.1
D 8 195 1420719 1644.38 3588 3473 861.9
D 2 152 1221985 1413.79 3588 3473 861.9
D 2 33 387480 445.55 3588 3473 861.9

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