ASTROSAT CZTI

Data Quality Report

Orbit 20180310_G08_077T01_9000001970_level2

Creation date: 2018-07-02T19:29:07.886937
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/AS1G08_077T01_9000001970cztM0_level2_bc.evt modeM0/AS1G08_077T01_9000001970cztM0_level2_quad_clean.evt
Size (bytes)6,831,414,7202,236,357,440
Size6.4 GB 2.1 GB
Events in quadrant A50,788,68614,110,176
Events in quadrant B68,200,98513,176,899
Events in quadrant C33,175,93415,042,463
Events in quadrant D43,683,61514,299,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04003080
B05152240
C03352120
D03647390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033020
B033020
C033020
D033020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02370
B02370
C02370
D02370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16204389755.538653%
B1620432848717.579902%
C16204313650.842369%
D16204334422.124128%

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 185789 162024 2995 2995 1.61% 1.85%
B 185789 161641 2990 2990 1.61% 1.85%
C 185789 162046 16 16 0.01% 0.01%
D 185789 162047 952 952 0.51% 0.59%

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 17954140 10512.52 7825 7678 1707.2
A 12 189 2017001 1177.0 7825 7678 1707.2
A 1 162 268834 152.98 7825 7678 1707.2
B 4 239 37766432 27365.47 7320 7131 1379.8
B 3 64 522419 373.45 7320 7131 1379.8
B 0 230 488184 348.64 7320 7131 1379.8
C 15 208 700713 385.75 8136 8032 1795.7
C 3 233 292811 158.59 8136 8032 1795.7
C 14 234 177927 94.61 8136 8032 1795.7
D 1 52 6270272 3382.06 8060 7790 1851.7
D 10 157 2717117 1463.17 8060 7790 1851.7
D 8 195 1544358 829.82 8060 7790 1851.7

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