CST - PIC solver time jitter evaluation

Good morning, 

I'm using cst particle studio PIC solver for some simulation regarding photogun electron accelerator.

I'm currently trying to evaluate the time jitter of the electron bunch while traveling along the accelerating electrode,

  1. in the traking simulation mode, I just need to place some 2d particle monitor, and then in the result template-->evaluate particle on plane-->time deviation.
  2. unfortunately in the PIC simulation mode there is no such function, I'm currently simulating a single packet of electrons, and I'm in desperate need to find a solution to get the time jitter of the electrons inside the single packet.

Could anyone please give me any hint on how this could be performed? I tried reading all available resources without finding a similar problem.

Thank you very much in advance for any help, it is really appreciated.

CST Studio Suite