Seems to have a lot of info on it.
Pain to copy and paste every paragraph into the Google translator.
But using the pics, you can easily figure out what is going on.
It seems that Russians have a big problem with "crickets" in their Astras.
http://astra-h.ru/noise_pribor.htmlTranslation of first paragraph:
The main reason for "cricket" in the instrument cluster Opel Astra H - material of construction of the back cover. Cricket appears on bad roads in the form of a scratchy sound. Check its availability can simply pressing his hand on top of the instrument cluster (not glass!)