If this is zero, the noise in each box (see parameter "noi.box_size" ) is found by taking Fourier transform of the residuals in each box and then using the mean power in the range 2 to 10 Hz as the noise. If it is non-zero, the noise for each residual is set to the variance of the neighbouring residuals in a box centred on the residual. Using this scheme causes the noise values to vary continuously with time, whereas the FFT scheme produced blocks of equal noise values. When using a small box size, " noi.box_type=1" will often result in far fewer samples being flagged as unusable. Note, if " noi.box_size" is set to zero, then the value of " noi.box_type" is ignored and the noise is always calculated on the basis of the mean power in the 2 to 10 Hz band. [1]

MAKEMAP, CALCQU