Button click ajax call firing multiple times in mvc4?

Hello Sir,

After this ('#btn_rightArw_Dwn') button click ajax call firing multiple times in mvc4. why this is happening? Please look up on below jQuery code.

$("#btn_rightArw_Dwn").unbind().click(function () {
alert('hi')
var Masterid = $('#MastersId').val();
var pgm_id = $('#program1').val();
if ($('#rdclick').val() == "0") {
alert('got')
$.ajax({

beforeSend: function () {
setTimeout(function () {
$('.fade_bg').show();
}, 0.1);

},
url: "/DataInput/Arrow_Load_Down?Id=" + Masterid + "&flag=" + "Right" + "&type=" + 0 + "&pgm_id=" + pgm_id,
async: true,
data: {},
success: function (data) {
$('#DVmaster').html(data);
$('#btn_rightArw1').attr('hidden', false);
$('#btn_LeftArw1').attr('hidden', false);
var production_id = $('#program1').val();

$.ajax({

url: "/DataInput/Arrow_Load_Details_Down?Id=" + Masterid + "&flag=" + "Right" + "&ProductnSts_id=" + pgm_id + "&type=" + 0,

async: false,
data: {},
success: function (data) {

$('#DVDetails').html(data);
$('#DVDetails').show();
$('.fade_bg').hide();
$('#btn_rightArw_Dwn').attr('hidden', false);
$('#btn_LeftArw_dwn').attr('hidden', false);

},
error: function (html) {
$('.fade_bg').hide();
}
});

var channelid = $("#channel1").val();
var starttime = $("#StartTime").val();
var Endtime = $("#EndTime").val();
var date = $("#Date").val();
var Vimpact = $("#Viewers").val();
var gradeid = $("#grade1").val();
var seclength = $("#Seconds option:selected").text();
var Daypartid = $('#daypartid').val();
var itemid = $('#item1 option:selected').val();
var brandid = $("#brand1 option:selected").val();




$.ajax({
url: "/DataInput/Print_Labels_in_Edit?starttime=" + starttime + "&finishtime=" + Endtime + "&date=" + date + "&channelid="
+ channelid + "&impact1=" + Vimpact + "&Seclength=" + seclength + "&gradesid=" + gradeid + "&itemid=" + itemid + "&brandid=" + brandid,

cache: false,
success: function (html) {
var labels = html.split(',');
var daypartname = labels[0];
var CPH = labels[1];
var TVR = labels[2];
var Mediavalue = labels[3];
var daypartid = labels[4];
$('.fade_bg').hide();
$('#lblDaypart').text(" " + daypartname);
$("#lblCPH").text('£' + " " + CPH);
$('#lblTvr').text(" " + TVR);
$('#lblMediaValue').text(" " + "£ " + Mediavalue);
$('#daypartid').val(daypartid);



},
error: function (html) {
$('.fade_bg').hide();
}
});

}

});
$('.fade_bg').hide();
}
});

Kindly replay me.

Advance thanks.