ASTROSAT CZTI

Data Quality Report

Orbit 20160215_P01_175T03_9000000322_level2

Creation date: 2017-10-27T05:08:09.188081
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_175T03_9000000322cztM0_level2.evt modeM0/AS1P01_175T03_9000000322cztM0_level2_quad_clean.evt
Size (bytes)13,098,392,6401,024,214,400
Size12.2 GB 976.8 MB
Events in quadrant A101,038,1836,406,204
Events in quadrant B107,592,5266,588,149
Events in quadrant C90,491,0536,454,750
Events in quadrant D92,402,0176,216,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B1710
C1710
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03549970
B03739400
C03233130
D03291830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018380
B018380
C018380
D018380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7660132764.276707%
B7660022712.964752%
C766025060.660557%
D7659819642.564036%

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 139047 105308 4481 4481 3.22% 4.26%
B 139047 105589 4100 4100 2.95% 3.88%
C 139047 106164 1688 1688 1.21% 1.59%
D 139047 106078 3722 3722 2.68% 3.51%

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 0 199 9273799 1626.16 23731 23857 5688.2
A 0 128 847262 144.76 23731 23857 5688.2
A 15 171 113595 15.78 23731 23857 5688.2
B 4 48 7787964 1326.29 24981 25058 5853.1
B 5 68 3072642 520.68 24981 25058 5853.1
B 8 3 1636951 275.39 24981 25058 5853.1
C 14 223 248290 35.04 23015 23802 6405.7
C 10 82 195004 26.73 23015 23802 6405.7
C 10 34 161248 21.46 23015 23802 6405.7
D 2 32 3156712 458.37 22091 22908 6836.8
D 13 232 1940737 280.52 22091 22908 6836.8
D 1 84 1505281 216.82 22091 22908 6836.8

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