Python signal_to_noise_oir_ccd Examples

Example #1

File: test_funcs.py Project: zkurtz/astropy

def test_signal_to_noise_oir_ccd():

    result = funcs.signal_to_noise_oir_ccd(1, 25, 0, 0, 0, 1)
    assert 5.0 == result
    # check to make sure gain works
    result = funcs.signal_to_noise_oir_ccd(1, 5, 0, 0, 0, 1, 5)
    assert 5.0 == result

    # now add in sky, dark current, and read noise
    # make sure the snr goes down
    result = funcs.signal_to_noise_oir_ccd(1, 25, 1, 0, 0, 1)
    assert result < 5.0
    result = funcs.signal_to_noise_oir_ccd(1, 25, 0, 1, 0, 1)
    assert result < 5.0
    result = funcs.signal_to_noise_oir_ccd(1, 25, 0, 0, 1, 1)
    assert result < 5.0

    # make sure snr increases with time
    result = funcs.signal_to_noise_oir_ccd(2, 25, 0, 0, 0, 1)
    assert result > 5.0

Example #2

File: test_funcs.py Project: Cadair/astropy

def test_signal_to_noise_oir_ccd():

    result = funcs.signal_to_noise_oir_ccd(1, 25, 0, 0, 0, 1)
    assert 5.0 == result
    # check to make sure gain works
    result = funcs.signal_to_noise_oir_ccd(1, 5, 0, 0, 0, 1, 5)
    assert 5.0 == result

    # now add in sky, dark current, and read noise
    # make sure the snr goes down
    result = funcs.signal_to_noise_oir_ccd(1, 25, 1, 0, 0, 1)
    assert result < 5.0
    result = funcs.signal_to_noise_oir_ccd(1, 25, 0, 1, 0, 1)
    assert result < 5.0
    result = funcs.signal_to_noise_oir_ccd(1, 25, 0, 0, 1, 1)
    assert result < 5.0

    # make sure snr increases with time
    result = funcs.signal_to_noise_oir_ccd(2, 25, 0, 0, 0, 1)
    assert result > 5.0