def find_abs_min(arr):
    """
    Finds minimum value of the array where each element is absoluted
    :param arr: the input array
    :return: minimum value and its first index
    """
    min_val, min_index = (abs(arr[0]), 0)
    for i in range(len(arr)):
        if min_val > abs(arr[i]):
            min_val, min_index = (abs(arr[i]), i)
    return min_val, min_index