VCC drops in logic analyzer

Hi, I’m analyzing some stuff on the autonomo. I have the GPRS Bee connected to the autonomo and a Venus GPS module (sparkfun) connected to Serial2. I feed the GPS module using the switched VCC port. (VCC_SW)

I noticed some strange drops in this VCC_SW line so I setup my logic analyzer while executing the program and I can see communications between my server over GPRS data connection with the BEE and the GPS NMEA strings coming in. However, notice the strange voltage drop on all these lines every now and then… The drop is only 63 nS… but it is noticeable and appears as a 0xFF byte coming in…

Is this power related?

Tried this with USB connected and without USB connected running on the solar panel and the battery.