ASTROSAT CZTI

Data Quality Report

Orbit 20151023_P01_163T03_9000000056_level2

Creation date: 2016-09-06T18:00:01.345932
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_163T03_9000000056cztM0_level2_bc.evt modeM0/AS1P01_163T03_9000000056cztM0_level2_quad_clean.evt
Size (bytes)694,920,960142,764,480
Size662.7 MB 136.2 MB
Events in quadrant A5,178,653849,522
Events in quadrant B5,435,992835,114
Events in quadrant C4,402,304848,919
Events in quadrant D5,077,216829,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692310
B0676560
C0608060
D0614690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138945864.217648%
B1389410817.780337%
C13894760.546999%
D138941571.129984%

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 20539 13894 95 95 0.46% 0.68%
B 20539 13894 864 864 4.21% 6.22%
C 20539 13894 19 19 0.09% 0.14%
D 20539 13894 41 41 0.20% 0.30%

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 0 69 1635700 12832.89 624 613 127.4
A 15 127 346749 2716.63 624 613 127.4
A 0 238 312061 2444.38 624 613 127.4
B 5 176 2048814 18266.57 635 619 112.1
B 2 2 508241 4527.16 635 619 112.1
B 0 230 53830 474.55 635 619 112.1
C 10 107 1409239 10561.38 626 618 133.4
C 3 159 378856 2835.91 626 618 133.4
C 14 206 48628 359.96 626 618 133.4
D 7 85 562522 4074.99 622 607 137.9
D 1 5 557920 4041.61 622 607 137.9
D 1 4 160072 1156.43 622 607 137.9

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