ASTROSAT CZTI

Data Quality Report

Orbit 20161209_G06_065T01_9000000868_level2

Creation date: 2017-09-22T12:12:02.772401
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_065T01_9000000868cztM0_level2.evt modeM0/AS1G06_065T01_9000000868cztM0_level2_quad_clean.evt
Size (bytes)891,201,600247,224,960
Size849.9 MB 235.8 MB
Events in quadrant A6,397,8361,691,741
Events in quadrant B6,392,9741,656,500
Events in quadrant C5,784,6491,625,137
Events in quadrant D7,526,9621,609,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284810
B0281200
C0267150
D0313840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13114880.671039%
B13114920.701540%
C13114360.274516%
D131141611.227696%

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 15819 13117 29 29 0.18% 0.22%
B 15819 13117 32 32 0.20% 0.24%
C 15819 13117 1 1 0.01% 0.01%
D 15819 13117 75 75 0.47% 0.57%

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 15 234 319479 1012.85 1545 1512 313.9
A 15 236 66807 207.99 1545 1512 313.9
A 8 15 25576 76.65 1545 1512 313.9
B 0 219 159960 548.53 1530 1498 288.9
B 4 81 77841 264.27 1530 1498 288.9
B 15 204 36492 121.14 1530 1498 288.9
C 1 16 14806 39.25 1472 1477 339.6
C 13 61 11599 29.8 1472 1477 339.6
C 12 4 11504 29.52 1472 1477 339.6
D 8 195 885680 2409.82 1489 1444 366.9
D 2 152 360055 977.33 1489 1444 366.9
D 5 97 249577 676.24 1489 1444 366.9

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