The present invention relates to a method and system for monitoring and controlling a glass container forming process. A signal-to-interference ratio estimate of a control channel and a channel quality estimate of user-data channel are employed in the determination of the channel quality indicator. One axis of rotation is in the direction of a rod mounted to the magnet, and the other axis is along an imaginary line that runs through the center of the magnet body, roughly perpendicular to the rod. A feedback circuit analyzes output signals from the photodetectors and determines wavelength error based on differences between the output signals from the photodetectors. The metal gettering agent getters metal filler that escapes the metal barrier layer. The flip chip die includes a plurality of copper pillar bumps, each copper pillar bump of the plurality of copper pillar bumps having a copper portion attached to the die and a bonding cap attached to the copper portion.