119 lines
4.4 KiB
Python
119 lines
4.4 KiB
Python
from astroquery.mast import Observations
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from astropy import table
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from astropy.io import fits
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import numpy as np
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from enum import Enum
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from copy import deepcopy
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class DataType(Enum):
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DataValidation = 1
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LightCurve = 2
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TargetPixel = 3
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class ObservationSource(Enum):
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KEPLER = 1
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K2 = 2
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TESS = 3
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# base from https://spacetelescope.github.io/mast_notebooks/notebooks/TESS/beginner_astroquery_dv/beginner_astroquery_dv.html
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# modified for sector span
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def parse_manifest(manifest):
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"""
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Parse manifest and add back columns that are useful for TESS DV exploration.
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"""
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results = deepcopy(manifest)
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filenames = []
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sector_range = []
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exts = []
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for i,f in enumerate(manifest['Local Path']):
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file_parts = np.array(np.unique(f.split(sep = '-')))
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try:
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with fits.open(f, mode="readonly") as hdu:
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if("SECTOR" in hdu[0].header):
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sector_range.append(f"{hdu[0].header['SECTOR']}")
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elif("TTABLEID" in hdu[0].header):
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sector_range.append(f"{hdu[0].header['TTABLEID']}")
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hdu.close()
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except:
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sector_range.append("-")
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path_parts = np.array(f.split(sep = '/'))
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filenames.append(path_parts[-1])
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exts.append(path_parts[-1][-8:])
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results.add_column(table.Column(name = "filename", data = filenames))
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results.add_column(table.Column(name = "sector", data = sector_range))
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results.add_column(table.Column(name = "fileType", data = exts))
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results.add_column(table.Column(name = "index", data = np.arange(0,len(manifest))))
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return results
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def getStarObservations(starName: str, sources: list[ObservationSource], sequences: list[list[int]] = []) -> str:
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obs = Observations.query_object(objectname=starName, radius="0 deg")
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obsWantedFilter = obs["dataproduct_type"] == "timeseries"
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if(len(sequences) > 1):
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obsWantedFilter &= ((obs['sequence_number'] >= max(sequences)) &
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(obs['sequence_number'] <= min(sequences)))
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elif(len(sequences) == 1):
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obsWantedFilter &= (obs['sequence_number'] == sequences[0])
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obsSourceFilter = np.ma.MaskedArray(data=np.full(obsWantedFilter.shape, False),
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mask=False, fill_value=True)
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if(ObservationSource.KEPLER in sources):
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obsSourceFilter |= (obs['obs_collection'] == "Kepler")
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if(ObservationSource.K2 in sources):
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obsSourceFilter |= (obs['obs_collection'] == "K2")
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if(ObservationSource.TESS in sources):
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obsSourceFilter |= (obs['obs_collection'] == "TESS")
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obsWantedFilter &= obsSourceFilter
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return obs[obsWantedFilter]
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def fitsFilenameFilterFunc(table, key_colnames):
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if(str(table["productFilename"]).lower().endswith(".fits") or
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str(table["productFilename"]).lower().endswith(".fit")):
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return True
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return False
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def downloadStarProducts(obs_wanted, keplerCadences, k2Cadences):
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if(len(keplerCadences) != 2):
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raise Exception("keplerCadences needs to have length 2")
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if(len(k2Cadences) != 2):
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raise Exception("k2Cadences need to have length 2")
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dataProducts = Observations.get_product_list(obs_wanted)
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# LC: TESS lightcurve
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# SLC: Kepler short cadence lightcurve
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# LLC: Kepler long cadence lightcurve
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productSubGroups = ["LC", "SLC"]
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tessProducts = Observations.filter_products(dataProducts, obs_collection="TESS",
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productSubGroupDescription=["LC"])
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keplerSubGroups = []
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if(keplerCadences[0]):
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keplerSubGroups.append("SLC")
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if(keplerCadences[1]):
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keplerSubGroups.append("LLC")
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keplerProducts = Observations.filter_products(dataProducts, obs_collection="Kepler",
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productSubGroupDescription=keplerSubGroups)
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k2SubGroups = []
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if(k2Cadences[0]):
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k2SubGroups.append("SLC")
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if(k2Cadences[1]):
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k2SubGroups.append("LLC")
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k2Products = Observations.filter_products(dataProducts, obs_collection="K2",
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productSubGroupDescription=k2SubGroups)
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productsWanted = table.vstack([tessProducts, keplerProducts, k2Products])
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productsWanted = productsWanted.group_by("productFilename")
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productsWanted = productsWanted.groups.filter(fitsFilenameFilterFunc)
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filenames = Observations.download_products(productsWanted)
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return parse_manifest(filenames)
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