How to find a radio button value in side ng-repeat

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jQuery

AngularJs

RadioButton

Please help me to find all selected radio button id for below code

Here's an idea of what my HTML looks like

<div ng-app="MyApp">
    <div ng-controller="MyCtrl">
        <div>
            <table cellpadding="2" cellspacing="2" border="1" ng-repeat="dep in DepList track by $index">
                <tr>
                    <th> Name </th>
                </tr>
                <tr ng-repeat="item in ContactsList | findobj: dep.groupid">
                    <td>{{item.name}}</td>
                    <td><input type="radio" name="radius+{{$parent.$index}}" data-ng-value="{{item.id}}" ng-model="UniqueId" selected="true" /></td>
                </tr>
            </table>
        </div>
        <div>
            <button ng-click="Select()">Select</button>
        </div>
    </div>
</div>

And here's my Controller

<script type="text/javascript">
    var myapp1 = angular.module('MyApp', []);
    myapp1.controller('MyCtrl', function ($scope) {
        $scope.DepList = [{ dep: "computer", groupid: "1" }, { dep: "english", groupid: "2" }];
        $scope.ContactsList = [{
            name: "Sijith",
            id: "1",
            groupid: "1"
        }, {
            name: "Deepak",
            id: "1",
            groupid: "2"
        },
          {
              name: "Libi das",
              id: "1",
              groupid: "2"
          }, {
              name: "Noufal",
              id: "1",
              groupid: "1"
          }, {
              name: "Jijo",
              id: "1",
              groupid: "2"
          }];

       
        $scope.Select = function () { alert($scope.UniqueId);};
    });


    myapp1.filter('findobj', function () {
        return function (ContactsList, id) {
            return ContactsList.filter(function (l) {
                if (l.groupid == id) {
                    return true;
                }
            });
        };
    });

</script>

What I have tried:

$scope.SelectRoom = function () {
alert($scope.UniqueId);
};