Coverage for tests/test_catalogMatch.py: 24%
93 statements
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1# This file is part of analysis_tools.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
22import unittest
24import astropy.units as u
25import lsst.afw.table as afwTable
26import lsst.geom
27import lsst.skymap
28import numpy as np
29import pandas as pd
30from astropy.table import Table
31from lsst.analysis.tools.tasks import AstrometricCatalogMatchConfig, AstrometricCatalogMatchTask
32from lsst.daf.base import PropertyList
33from lsst.meas.algorithms.testUtils import MockRefcatDataId
34from lsst.pipe.base import InMemoryDatasetHandle
35from lsst.pipe.tasks.loadReferenceCatalog import LoadReferenceCatalogTask
38class TestCatalogMatch(unittest.TestCase):
39 """Test AstrometricCatalogMatchTask"""
41 def setUp(self):
42 config = AstrometricCatalogMatchConfig()
43 config.bands = ["g", "r", "i", "z", "y"]
44 self.task = AstrometricCatalogMatchTask(config=config)
45 self.task.config.extraColumns.append("sourceId")
46 self.task.config.referenceCatalogLoader.refObjLoader.requireProperMotion = False
48 self.rng = np.random.default_rng(12345)
50 self.skymap = self._make_skymap()
51 self.tract = 9813
53 tract = self.skymap.generateTract(self.tract)
54 self.tractPoly = tract.getOuterSkyPolygon()
55 self.tractBbox = self.tractPoly.getBoundingBox()
57 self.nStars = 1000
58 starIds = np.arange(self.nStars)
59 starRas = (
60 self.rng.random(self.nStars) * self.tractBbox.getWidth().asDegrees()
61 + self.tractBbox.getLon().getA().asDegrees()
62 )
63 starDecs = (
64 self.rng.random(self.nStars) * self.tractBbox.getHeight().asDegrees()
65 + self.tractBbox.getLat().getA().asDegrees()
66 )
68 refDataId, deferredRefCat = self._make_refCat(starIds, starRas, starDecs, self.tractPoly)
70 loaderTask = LoadReferenceCatalogTask(
71 config=config.referenceCatalogLoader,
72 dataIds=[refDataId],
73 name="gaia_dr3_20230707",
74 refCats=[deferredRefCat],
75 )
76 self.loadedRefCat = self.task._loadRefCat(loaderTask, tract)
77 self.loadedRefCat["sourceId"] = np.arange(0, len(self.loadedRefCat))
79 self.objectTable = self._make_objectCat(starIds, starRas, starDecs)
81 def _make_skymap(self):
82 """Make a testing skymap.
84 Returns
85 -------
86 `lsst.skymap.ringsSkyMap.RingsSkyMap`
87 Skymap that mimics the "hsc_rings_v1" skymap
88 """
89 skymap_config = lsst.skymap.ringsSkyMap.RingsSkyMapConfig()
90 skymap_config.numRings = 120
91 skymap_config.projection = "TAN"
92 skymap_config.tractOverlap = 1.0 / 60
93 skymap_config.pixelScale = 0.168
94 return lsst.skymap.ringsSkyMap.RingsSkyMap(skymap_config)
96 def _make_refCat(self, starIds, starRas, starDecs, poly):
97 """Make a mock `deferredDatasetReference` and
98 `DeferredDatasetHandle.dataId for a reference catalog.
100 Parameters
101 ----------
102 starIds : `np.ndarray` of `int`
103 Source ids for the simulated stars
104 starRas : `np.ndarray` of `float`
105 RAs of the simulated stars
106 starDecs : `np.ndarray` of `float`
107 Decs of the simulated stars
108 poly : `lsst.sphgeom._sphgeom.ConvexPolygon`
109 Bounding polygon containing the simulated stars
111 Returns
112 -------
113 refDataId : `lsst.meas.algorithms.testUtils.MockRefcatDataId`
114 Object that replicates the functionality of a dataId
115 deferredRefCat : InMemoryDatasetHandle
116 Object that replicates the functionality of a `DeferredDatasetRef`
117 """
118 refSchema = afwTable.SimpleTable.makeMinimalSchema()
119 idKey = refSchema.addField("sourceId", type="I")
120 fluxKey = refSchema.addField("phot_g_mean_flux", units="nJy", type=np.float64)
121 fluxErrKey = refSchema.addField("phot_g_mean_fluxErr", units="nJy", type=np.float64)
122 refCat = afwTable.SimpleCatalog(refSchema)
123 ref_md = PropertyList()
124 ref_md.set("REFCAT_FORMAT_VERSION", 1)
125 refCat.table.setMetadata(ref_md)
126 for i in range(len(starIds)):
127 record = refCat.addNew()
128 record.set(idKey, starIds[i])
129 record.setRa(lsst.geom.Angle(starRas[i], lsst.geom.degrees))
130 record.setDec(lsst.geom.Angle(starDecs[i], lsst.geom.degrees))
131 record.set(fluxKey, 1)
132 record.set(fluxErrKey, 0.01)
133 refDataId = MockRefcatDataId(poly)
134 deferredRefCat = InMemoryDatasetHandle(refCat, storageClass="SimpleCatalog", htm7="mockRefCat")
135 return refDataId, deferredRefCat
137 def _make_objectCat(self, starIds, starRas, starDecs):
138 """Make a `pd.DataFrame` catalog with the columns needed for the
139 object selector.
141 Parameters
142 ----------
143 starIds : `np.ndarray` of `int`
144 Source ids for the simulated stars
145 starRas : `np.ndarray` of `float`
146 RAs of the simulated stars
147 starDecs : `np.ndarray` of `float`
148 Decs of the simulated stars
149 poly : `lsst.sphgeom._sphgeom.ConvexPolygon`
150 Bounding polygon containing the simulated stars
152 Returns
153 -------
154 sourceCat : `pd.DataFrame`
155 Catalog containing the simulated stars
156 """
157 x = self.rng.random(self.nStars) * 4000
158 y = self.rng.random(self.nStars) * 4000
159 radecErr = 1.0 / (3600 * 10) # Let random scatter be about 1/10 arcsecond
160 sourceDict = {
161 "sourceId": starIds,
162 "coord_ra": starRas + self.rng.standard_normal(self.nStars) * radecErr,
163 "coord_dec": starDecs + self.rng.standard_normal(self.nStars) * radecErr,
164 "x": x,
165 "y": y,
166 }
168 for key in [
169 "r_psfFlux_flag",
170 "y_extendedness_flag",
171 "i_pixelFlags_saturatedCenter",
172 "r_extendedness_flag",
173 "y_extendedness",
174 "g_extendedness_flag",
175 "z_extendedness",
176 "i_extendedness",
177 "z_pixelFlags_saturatedCenter",
178 "i_psfFlux_flag",
179 "r_pixelFlags_saturatedCenter",
180 "xy_flag",
181 "r_extendedness",
182 "y_pixelFlags_saturatedCenter",
183 "i_extendedness_flag",
184 "patch",
185 "g_psfFlux_flag",
186 "y_psfFlux_flag",
187 "z_psfFlux_flag",
188 "g_pixelFlags_saturatedCenter",
189 "z_extendedness_flag",
190 "g_extendedness",
191 ]:
192 sourceDict[key] = 0
193 for key in ["detect_isPatchInner", "detect_isDeblendedSource"]:
194 sourceDict[key] = 1
195 for key in ["i_psfFlux", "g_psfFlux", "r_psfFlux", "y_psfFlux", "z_psfFlux"]:
196 sourceDict[key] = 1000
197 for key in ["z_psfFluxErr", "i_psfFluxErr", "r_psfFluxErr", "g_psfFluxErr", "y_psfFluxErr"]:
198 sourceDict[key] = 1
199 sourceCat = Table.from_pandas(pd.DataFrame(sourceDict))
200 return sourceCat
202 def test_setRefCat(self):
203 """Test whether the objects in the reference catalog are in the
204 expected footprint and that we get as many as expected
205 """
206 coord_ra = (self.loadedRefCat["ra"] * u.degree).to(u.radian).value
207 coord_dec = (self.loadedRefCat["dec"] * u.degree).to(u.radian).value
208 inFootprint = self.tractBbox.contains(coord_ra, coord_dec)
209 self.assertTrue(inFootprint.all())
210 self.assertEqual(len(self.loadedRefCat), self.nStars)
212 def test_run(self):
213 """Test whether `CatalogMatchTask` correctly associates the target and
214 reference catalog.
215 """
216 output = self.task.run(
217 targetCatalog=self.objectTable, refCatalog=self.loadedRefCat, bands=self.task.config.bands
218 )
220 self.assertEqual(len(output.matchedCatalog), self.nStars)
221 self.assertListEqual(
222 list(output.matchedCatalog["sourceId_target"]),
223 list(output.matchedCatalog["sourceId_ref"]),
224 )
227class MyMemoryTestCase(lsst.utils.tests.MemoryTestCase):
228 pass
231def setup_module(module):
232 lsst.utils.tests.init()
235if __name__ == "__main__": 235 ↛ 236line 235 didn't jump to line 236, because the condition on line 235 was never true
236 lsst.utils.tests.init()
237 unittest.main()