ASTROSAT CZTI

Data Quality Report

Orbit 20170909_G07_079T01_9000001528_level2

Creation date: 2017-10-25T09:36:24.716590
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/AS1G07_079T01_9000001528cztM0_level2.evt modeM0/AS1G07_079T01_9000001528cztM0_level2_quad_clean.evt
Size (bytes)1,162,509,120173,652,480
Size1.1 GB 165.6 MB
Events in quadrant A8,150,0191,047,093
Events in quadrant B10,001,3001,064,563
Events in quadrant C6,758,2001,075,342
Events in quadrant D9,265,2061,018,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346460
B0398450
C0311850
D0374010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152594272.798349%
B152599926.501081%
C152592411.579396%
D152593092.025034%

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 16934 15262 117 117 0.69% 0.77%
B 16934 15262 505 505 2.98% 3.31%
C 16934 15262 2 2 0.01% 0.01%
D 16934 15262 33 33 0.19% 0.22%

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 15 239 1249244 3484.07 1758 1715 358.1
A 1 162 45655 122.71 1758 1715 358.1
A 8 5 25281 65.81 1758 1715 358.1
B 4 239 2580648 7670.55 1746 1703 336.2
B 11 51 324449 959.94 1746 1703 336.2
B 0 214 84397 245.96 1746 1703 336.2
C 14 234 13250 28.56 1729 1738 403.1
C 13 61 12836 27.53 1729 1738 403.1
C 1 3 5483 9.29 1729 1738 403.1
D 2 16 1528836 3657.39 1712 1664 417.6
D 8 195 798505 1908.34 1712 1664 417.6
D 1 52 172140 408.27 1712 1664 417.6

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