TIME VARIABILITY IN AMPLITUDE

Assuming the uv data have been calibrated for the antenna gains, one might want to plot the amplitude versus time by selecting a particular source and a uvrange in order to investigate the time variability. Here is the usage of smauvamp for this purpose:

  Task:   smauvamp
  vis      = mydata.uv                     % uv file name
  select   = source(sour1),uvrange(25,100) % select sour1 and
                                             uvrange from 25 to 100
                                             kilo wavelengths
  axis     = time,amp                      % time for x-axis
                                             amplitude for y-axis
  average  = 1                             % averaging the visibility
                                             in time interval of 1 min
                                             for each baseline prior to
                                             doing bin statistics 
  nbin     = 50                            % make 50 bins in the 
                                             range of x-axis.
  device   = /xs                           % plotting device

Figure: The plot of amplitude variability in time for sour1.