Xperia z2 led notification led and battery drain topic

Hi guys hope someone can help. This is the first time I've rooted and flashed a custom ROM bootloader is unlocked and I'm running CyanogenMod 12-20150201 nightly all seems well except a few issues and as I'm new to this I'm not exactly sure what to do the Led light is extremely dim and I've noticed incredible battery drain are these issues just me or is it the nightly ROM cheers