Slanting Lines in Stepped Area Chart

[Himanshu Tongya]

We are using a stepped area chart to draw the steps for ON and OFF state.

We are using below code -

google.charts.load('current', {'packages':['corechart']});

     google.charts.setOnLoadCallback(drawChart);

      function drawChart() {

        var data = google.visualization.arrayToDataTable([

          ["Time",  "State"],

          [new Date(Number("1553076311009")), 0],

          [new Date(Number("1553076312010")), 1],

          [new Date(Number("1553076313011")), 0],

          [new Date(Number("1553076314012")), 1],

          [new Date(Number("1553076321013")), 1],

          [new Date(Number("1553076331014")), 1],

          [new Date(Number("1553076341015")), 0],

          [new Date(Number("1553076351016")), 0],

          [new Date(Number("1553076361017")), 1],

          [new Date(Number("1553076371018")), 0],

          [new Date(Number("1553076381019")), 1],

          [new Date(Number("1553076391020")), 1],

          [new Date(Number("1553076392021")), 1],

          [new Date(Number("1553076393022")), 0],

          [new Date(Number("1553076394023")), 0],

          [new Date(Number("1553076395024")), 1],

          [new Date(Number("1553076396025")), 0],

          [new Date(Number("1553076397026")), 1],

          [new Date(Number("1553076398027")), 1],

          [new Date(Number("1553076399057")), 1]

        ]);

        var options = {

          title: 'Machine state chart',

          vAxis: {

          title: 'State',

          ticks: [{v:1.00, f:'ON'}, {v:0.00, f:'OFF'}]},

          hAxis: {

          title: 'Time'},

          isStacked: true

        };

        var chart = new google.visualization.SteppedAreaChart(document.getElementById('chart_div'));

        chart.draw(data, options);

      }

That code is with sample data, we have around 500 entries so charts should be like Desired.png but it is looking like Reported.png.
Lines are slanting instead of vertical.

Any suggestion to resolve this issue?

Thanks

Himanshu