ASTROSAT CZTI

Data Quality Report

Orbit 20161026_G06_039T01_9000000758_level2

Creation date: 2017-09-18T20:27:10.755371
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_039T01_9000000758cztM0_level2.evt modeM0/AS1G06_039T01_9000000758cztM0_level2_quad_clean.evt
Size (bytes)4,841,519,0401,313,089,920
Size4.5 GB 1.2 GB
Events in quadrant A32,394,4768,841,788
Events in quadrant B33,629,8398,940,503
Events in quadrant C32,502,4848,791,089
Events in quadrant D43,155,0468,183,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01498310
B01516020
C01514080
D01802690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014960
B014960
C014940
D015000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A732327250.990004%
B732158171.115892%
C731956230.851151%
D7302426583.639899%

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 84171 73664 26 26 0.03% 0.04%
B 84171 73669 6 6 0.01% 0.01%
C 84171 73661 66 66 0.08% 0.09%
D 84171 73547 1556 1556 1.85% 2.12%

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 188965 109.24 8291 8110 1655.6
A 14 111 93436 51.54 8291 8110 1655.6
A 12 194 81000 44.03 8291 8110 1655.6
B 15 204 630574 396.89 8369 8158 1568.2
B 0 214 189626 115.72 8369 8158 1568.2
B 12 111 144931 87.22 8369 8158 1568.2
C 1 241 914093 493.92 8041 8065 1834.4
C 1 16 71764 34.72 8041 8065 1834.4
C 13 61 67284 32.28 8041 8065 1834.4
D 1 239 6911160 3632.52 7869 7624 1900.5
D 2 152 2252875 1181.41 7869 7624 1900.5
D 12 233 1026429 536.08 7869 7624 1900.5

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