Is "noise summary" tool reliable?
It is reliable in most cases.
Show me analysis statement.
I don't know what simulator you use.
However I recommend you to set "augmented=off", if you use Autonomous-Shooting-PSS/Pnoise in Cadence Spectre.
Try the followings, if you use Cadence Spectre.
(1) Autonomous-HB-PSS/Pnoise
(2) Autonomous-Shooting-Fullspectrum-PSS/Pnoise with augmented=on and augmented=off in Cadence APS
https://www.designers-guide.org/Forum/YaBB.pl?num=1438976388/2#2
(3) Set "noiseon_inst[...]" or "noiseoff_inst=[...]" in options statements.
Noise parameters
49 noiseon_inst=[...]
The list of instances to be considered as noisy throughout noise analysis, which include, noise, sp noise, pnoise and tran noise.
50 noiseoff_inst=[...]
The list of instances not to be considered as noisy throughout noise analyses, which include noise, sp noise, pnoise and tran noise.