[SalesForce] Unexpected behavior of a checkbox field when used in lightning component

I have a checkbox field which is unchecked by default. I am using this field in my lightning component where I am saving a record of my custom object along with other fields. I get error when I am trying to save this field even though this field is not required on the pagelayout. However this field works fine when I save the record by the standard 'new' button.

Error : 'CustomField__C: value not of required type:'

Does anybody have any pointers on this ?

Adding the code

<lightning:recordEditForm aura:id="neweditForm" objectApiName="Detail__c"
                              recordId="{!v.recordId}"
                              onsuccess="{!c.handleSuccess}"
                              onsubmit="{!c.submitForm}"
                              onerror="{!c.handleError}">
        <lightning:inputField fieldName="Opportunity__c" value="{!v.oppRecordId}" class="slds-hide"/>
        <div class="slds-section slds-is-open">
                <h3 class="slds-section__title slds-theme_shade">
                    <span class="slds-truncate slds-p-horizontal_small" title="Section Title">Address</span>
                </h3>
                <div aria-hidden="false" class="slds-section__content"></div>
            </div>
        <lightning:layout multipleRows="true" horizontalAlign="spread" pullToBoundary="small">
            <lightning:layoutItem size="6" padding="horizontal-small">
                <lightning:inputField fieldName="Street_c"/>
            </lightning:layoutItem>
 <lightning:layoutItem size="6" padding="horizontal-small">
                <lightning:inputField fieldName="CustomField__c"/>
            </lightning:layoutItem>
        <div class="modal-footer slds-modal__footer">
            <lightning:button class="slds-button slds-button_neutral" type="button" variant="brand" label="cancel" onclick="{!c.cancel}"/>
            <lightning:button class="slds-button slds-button_brand" type="submit" variant="brand" label="Save"/>
        </div>
        </lightning:recordEditForm>