ASTROSAT CZTI

Data Quality Report

Orbit 20160828_G05_140T01_9000000628_level2

Creation date: 2016-09-19T15:27:14.433515
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/AS1G05_140T01_9000000628cztM0_level2_bc.evt modeM0/AS1G05_140T01_9000000628cztM0_level2_quad_clean.evt
Size (bytes)1,213,283,520476,015,040
Size1.1 GB 454.0 MB
Events in quadrant A7,639,1573,026,949
Events in quadrant B8,086,0773,008,995
Events in quadrant C7,045,6863,045,487
Events in quadrant D11,536,8412,885,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0748410
B0758960
C0732760
D0888920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07260
B07260
C07260
D07260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A356854581.283452%
B356854421.238616%
C356853520.986409%
D3568510362.903181%

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 42144 35680 5 5 0.01% 0.01%
B 42145 35681 1 1 0.00% 0.00%
C 42145 35681 1 1 0.00% 0.00%
D 42145 35681 84 84 0.20% 0.24%

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 13 251 242555 599.83 1813 1780 401.4
A 4 2 126861 311.61 1813 1780 401.4
A 0 50 103289 252.88 1813 1780 401.4
B 15 204 569537 1640.87 1817 1769 346.0
B 4 48 119294 339.65 1817 1769 346.0
B 15 54 113203 322.05 1817 1769 346.0
C 1 16 61558 151.38 1779 1757 395.0
C 13 61 11784 25.38 1779 1757 395.0
C 8 128 9428 19.42 1779 1757 395.0
D 2 33 1131904 2693.02 1777 1709 419.7
D 1 7 1003152 2386.23 1777 1709 419.7
D 2 136 725196 1723.92 1777 1709 419.7

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