onNotification event PUSH ANDROID


Im working on my own php backend service for push notifications.
For IOS i use APNS and everything works fine!
For Android i use GCM api and i have one problem^
If i send push, while my device is awake and my App is active now, i can catch onNotification event in app,
BUT if android device is asleep or my app isnt active now then i received push, but when i click on it i get my APP loaded, but without onNotification event.
BUT if i use IONIC push service and send notification, i get push and catch onNotification event in app in both conditions
I need help ))

function onDeviceReady() {

        var io = Ionic.io();

        var user = Ionic.User.current();

        var onNotification = function(e) {
              alert('check onNotification fnction');

        var push = new Ionic.Push({
          "debug": false,
          "pluginConfig": {
            "ios": {
              "badge": true,
              "sound": true,
              "clearBadge": true
            "android": {
              "sound": true,
              "vibrate": true,
              "forceShow": true,
              "ecb": 'onNotification',
              "senderID": "MY_SENDER_ID"
          "onNotification": function(notification) {
          "onError": function(err) {

        var registerCallback = function(token) {

          app_token = token.token;                                  // this parameter i send to my service, to send pushes
          device = (ionic.Platform.isAndroid()) ? 'Android':'IOS';  // this parameter i send to my service, to send pushes




      document.addEventListener("deviceready", onDeviceReady, false);