Just to keep in mind for upcoming trps, BARC has started a new system starting from last week's trp, which includes all-India now, urban + rural. Before it was only urban which was taking info from about 50mil city households, but with rural, the total number is about 150 mil households, so all shows have seen a big rise/fall from last week due to this added feature. Only this week they've included urban with urban+rural to show the system before/after, but now onwards, it'll only be the total urban+rural number. Also, due to rural area's "prime time" being earlier than urban since they sleep earlier/get up earlier, many slightly early shows have seen benefit, like Satrangi Sasural. So I guess it means Satrangi Sasural has a high rural trp along with increase in urban trp which made it much higher in rating along other zee shows and in total trp.
Hope it continues to rise! Here's the official BARC announcement article talking about the system in more detail, click the first top link, it expands => http://www.barcindia.co.in/news-media.aspx