Mouse over Popup on multiple markers leaflet.js?

so I have a leaflet map with lot of markers placed on it. I want to have a popup with like the status of asset etc on 'hover' over the marker. I see some examples on google and try to implement but none of them is firing any events. here is my code with my attempt. how can i achieve this feature? do i have to use somekind of tooltip instead of popup?

  buildMarkerLayer = (rawAssetsObjects) => {
    let markersGroup = null;
    var self = this;

    markersGroup = L.markerClusterGroup({
        spiderfyOnMaxZoom: true,
        showCoverageOnHover: true,
        zoomToBoundsOnClick: true,
        spiderfyDistanceMultiplier: 2
    });

      self.$localForage.getItem('showAllAreas').then((_showAll) => {
        if(_showAll){
            this.loadAllAreas();
        }else{
            this.hideAllAreas();
        }

    });



    angular.forEach(rawAssetsObjects, function(_asset) {

        if(_asset.latitude && _asset.longitude){
            markersGroup.addLayer(L.marker(L.latLng(_asset.latitude,
            _asset.longitude), {
            id: _asset.id,
            icon: L.divIcon({
                html: self.siMarkers.createHTMLMarker(_asset)
            })
            }).on('click', function(e) {
                //dismiss the event timeline 
                self.$mdSidenav('right').close();

                self.centerOnClick(_asset);
                //set the selected asset to a shared service for availability in
                //other controllers
                self.siMapRam.setActive(_asset);
                //inform detail controller of a newly selected asset to query
                self.$rootScope.$broadcast('ActiveAssetChange');
                self.dgModal.display();
            }).bindPopup('work').on('mouseover',function(ev) {
               markersGroup.openPopup();
}));
        };
    });

    return markersGroup
}

so I added the mouseover function and is responding on the console with error, so at least i know the listening part is working