Question about measuring noise

Hello,

I'm trying to measure noise power of the mosfet device, and I've done simulation like this:

The plot is the output noise. Can I say this as noise powers generated at the MOSFET? About the MOSFET this is the Verilog-a model and I added noise sources arbitrarily with "whitenoise" function.

I'm not sure I've done an appropriate simulation.

Thank you in advance.

Sincerely,

Dongsuk Kang