Is the analytical solution right?

[TejasAvinashShetty]

In this notebook is the analytical solution as in this image right?

Because on trying (g = pi/ 4* T = 1/8) as in this figure

I am unable to get the U = cnot() (the target unitary)

I may have commited a mistake somewhere in the calculations. If so, I would be very much obliged if you would point it out to me.