radiation pattern of monopole antenna

i need help about radiation pattern of monopole antenna plot in CST. In 3D pattern its doughnut shaped , but when choose phi=0 , i not get full circle. my antenna is placed in X-Y Plane. if i choose theta=0 then the complete circle i getting in polar form. should i have to choose theta =0 for radiation plots?

When you select 3d pattern from far field options it actually takes 180 degree for one of the planes. Make sure that is 360 degrees aswell