filter detector
This filter is only for the XTE PCA data. You can specify which PCUs, layers, and anode sides you want by a series of three character strings. In each string the first character is the PCU (0-4), the second the layer (1-3), and the third the anode side (L or R). If you use a * for any character then xselect selects all the possibilities. So
xsel> filter detector "*1*"
will pass layer 1 in all 5 PCU and both anode sides.