45 lines
2.3 KiB
Python
45 lines
2.3 KiB
Python
from unittest import TestCase
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import astropy.units as u
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import numpy as np
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from esbo_etc.classes.Config import Configuration
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from esbo_etc.classes.target.FileTarget import FileTarget
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from esbo_etc.classes.target.BlackBodyTarget import BlackBodyTarget
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from esbo_etc.classes.optical_component.StrayLight import StrayLight
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from esbo_etc.classes.sensor.Imager import Imager
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class TestImager(TestCase):
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def setUp(self):
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self.config = Configuration("tests/data/esbo-etc_defaults.xml").conf
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self.imager_args = dict(quantum_efficiency=0.9 * u.electron / u.photon,
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pixel_geometry=np.array([1024, 1024]) << u.pix,
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pixel_size=6.5 * u.um, sigma_read_out=1.4 * u.electron ** 0.5 / u.pix,
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dark_current=0.6 * u.electron / u.pix / u.second, well_capacity=30000 * u.electron,
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f_number=13, common_conf=self.config.common, center_offset=np.array([0, 0]) << u.pix,
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shape="circle", contained_energy="FWHM", aperture_size=None)
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self.target = FileTarget("tests/data/target/target_demo_1.csv", np.arange(200, 210) << u.nm)
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self.zodiac = StrayLight(self.target, "tests/data/straylight/zodiacal_emission_1.csv")
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self.imager = Imager(self.zodiac, **self.imager_args)
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def test_getSNR(self):
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snr = self.imager.getSNR(0.1 * u.s)
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self.assertAlmostEqual(snr.value, 7.112939048582188)
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def test_getExpTime(self):
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exp_time = 0.1 * u.s
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snr = self.imager.getSNR(exp_time)
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exp_time_ = self.imager.getExpTime(snr)
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self.assertAlmostEqual(exp_time.value, exp_time_.value)
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def test_getSensitivity(self):
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exp_time = 100 * u.s
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target = BlackBodyTarget(np.arange(200, 210) << u.nm, mag=20 * u.mag)
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zodiac = StrayLight(target, "tests/data/straylight/zodiacal_emission_1.csv")
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imager = Imager(zodiac, **self.imager_args)
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snr = imager.getSNR(exp_time)
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target = BlackBodyTarget(np.arange(200, 210) << u.nm, mag=10 * u.mag)
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zodiac = StrayLight(target, "tests/data/straylight/zodiacal_emission_1.csv")
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imager = Imager(zodiac, **self.imager_args)
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sensitivity = imager.getSensitivity(exp_time, snr, 10 * u.mag)
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self.assertAlmostEqual(sensitivity.value, 20)
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