YouTube API to get the health status of live stream

I am trying to use YouTube Livestreaming API to get the health status of my live stream with partial success. It returns the following response when the stream is down and occasionally when the stream is up and doing fine. Why the search is returning an empty result when the streaming is fine? How to remove this ambiguity?

URL USED

https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=[Channel ID]&eventType=live&type=video&key=[API KEY]

RESPONSE SAMPLE WHEN STREAM IS DOWN

{"kind": "youtube#searchListResponse","etag": "vEIIB8AX6b5gvXSmMAHIm1mm2t8","regionCode": "BR","pageInfo": {"totalResults": 0,"resultsPerPage": 0  },"items": []}