Wrong timestamp in Alert index

[Aniket_Pant (kaal)]

Hi All,

I have created an alert which will do send alert on a specified index. I have chosen elasticsearch query index.

I have used metricbeat-* index for monitoring system uptime if node goes down i will get the alert

Here is my query

{
"query": {
    "bool": {
      "filter": [
        {
          "bool": {
            "must": [
            {
             "term": {
             "metricset.name": "uptime"
            }
            },
            {
              "range":
              {
                "@timestamp": {
              "gte": "now-15m"
            }
              }
            }
            ]
          }
        }
      ]
    }
  }
}

Alert ScreenShot
pic 1:

pic2:

pic3:

Alert output will send to below index

PUT test
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  },
  "mappings": {
    "properties": {
      "timestamp":{"type": "date"},
      "rule_id":{"type": "text"},
      "rule_name":{"type": "text"},
      "alert_id":{"type": "text"},
      "context_message":{"type": "text"}
    }
  }
}

Result i am getting , the system was down today at morning 10.43 but it is showing evening 5.

How can i correct this ?