/
Surveys.py
171 lines (155 loc) · 6.08 KB
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Surveys.py
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import cPickle,numpy
class Survey():
def __init__(self,Name):
self.zeroexposuretime=1
self.strategy="resolve"
self.strategyx=1
if Name[:3]=="DES":
self.pixelsize=0.263
self.side=76
self.bands=['g','r','i']
self.zeropoints=[30,30,30]
self.zeroexposuretime=90.
self.skybrightnesses=[21.7,20.7,20.1]
self.exposuretimes=[900,900,900]
self.gains=[4.5,4.5,4.5]
self.seeing=[.9,.9,.9]
self.nexposures=10
self.degrees_of_survey=5000
self.readnoise=(10/4.5)
twodg=cPickle.load(open("2dpdfs/2dg_DES.pkl",'r'))
twodr=cPickle.load(open("2dpdfs/2dr_DES.pkl",'r'))
twodi=cPickle.load(open("2dpdfs/2di_DES.pkl",'r'))
self.stochasticobservingdata=[twodg,twodr,twodi]
if Name=="DESsv":
self.degrees_of_survey=150
if Name=="DESsv" or Name =="DESa":
self.strategy="absolute"
self.strategyx=10
if Name=="DESb":
self.strategy="best"
self.strategyx=1
if Name=="DESdummy":
self.strategy="absolute"
self.strategyx=10
dumg=numpy.array([[1.2,21.7],[1.2,21.7]])
dumr=numpy.array([[0.95,20.7],[0.95,20.7]])
dumi=numpy.array([[0.95,20.1],[0.95,20.1]])
print "dummy seeing,strat"
self.stochasticobservingdata=[dumg,dumr,dumi]
self.strategy="absolute"
self.strategyx=10
elif Name[:4]=="LSST":
self.pixelsize=0.18
self.side=111
self.bands=['g','r','i']
self.zeropoints=[30,30,30]
self.zeroexposuretime=25
self.skybrightnesses=[21.7,20.7,20.1]
self.exposuretimes=[3000,6000,6000]
self.gains=[4.5,4.5,4.5]
self.seeing=[.4,.4,.4]
self.nexposures=100
self.degrees_of_survey=18000
self.readnoise=(10/4.5)
twodg=cPickle.load(open("2dpdfs/2dg_LSST.pkl",'r'))
twodr=cPickle.load(open("2dpdfs/2dr_LSST.pkl",'r'))
twodi=cPickle.load(open("2dpdfs/2di_LSST.pkl",'r'))
self.stochasticobservingdata=[twodg,twodr,twodi]
if Name[-1]=="a":
self.strategy="absolute"
self.strategyx=10
if Name[-1]=="b":
self.strategy="best"
self.strategyx=1
if Name[-1]=="c":
self.strategy="resolve"
self.strategyx=1
elif Name=="CFHT" or Name=="CFHTa":
self.pixelsize=0.187
self.side=107
self.bands=['g','r','i']
self.zeropoints=[26.96,26.47,26.24]
self.zeroexposuretime=1
self.skybrightnesses=[21.9,20.6,19.2]
self.exposuretimes=[3500,5500,5500]
self.gains=[1.62,1.62,1.62]
self.seeing=[.8,.8,0.8]
self.nexposures=1 # this isn't actually true, but the 2d pdfs
# are for the CFHT coadds (approximately)
self.degrees_of_survey=150
self.readnoise=(5)
twodg=cPickle.load(open("2dpdfs/2dg_CFHT.pkl",'r'))
twodr=cPickle.load(open("2dpdfs/2dr_CFHT.pkl",'r'))
twodi=cPickle.load(open("2dpdfs/2di_CFHT.pkl",'r'))
self.stochasticobservingdata=[twodg,twodr,twodi]
self.strategy="absolute"
self.strategyx=10
elif Name=="HSC":
self.pixelsize=0.17
self.side=200
self.bands=['g','r','i']
self.zeropoints=[30,30]
self.zeroexposuretime=90./(8.2/4)**2
self.skybrightnesses=[21.9,19.2]
self.exposuretimes=[600,600]
self.gains=[4.5,4.5]
self.seeing=[.8,.8]
self.nexposures=10
self.degrees_of_survey=1370
self.readnoise=(10/4.5)
twodg=numpy.array([[0.8,21.9],[0.8,21.9]])
twodi=numpy.array([[0.8,19.2],[0.8,19.2]])
self.stochasticobservingdata=[twodg,twodi]
elif Name=="COSMOS":
pass
elif Name=="Euclid":
self.pixelsize=0.1
self.side=200
self.bands=['VIS']
self.zeropoints=[25.5]
self.zeroexposuretime=1.
self.skybrightnesses=[22.2]
self.exposuretimes=[1610]
self.gains=[1]
self.seeing=[.2]
self.nexposures=4
self.degrees_of_survey=20000
self.readnoise=(4.5)
twodVIS=numpy.array([[0.17,22.2],[0.17,22.2]])
self.stochasticobservingdata=[twodVIS]
elif Name=="ideal":
self.pixelsize=0.05
self.side=400
self.bands=['g','r','i']
self.zeropoints=[24.5,24.5,24.5]
self.zeroexposuretime=4.
self.skybrightnesses=[220,220,220]
self.exposuretimes=[22400000000,22400000000,22400000000]
self.gains=[1,1,1]
self.seeing=[.05,0.05,0.05]
self.nexposures=1
self.readnoise=(.005)
twodr=numpy.array([[0.1,220],[0.1,220]])
twodg=numpy.array([[0.1,220],[0.1,220]])
twodi=numpy.array([[0.1,220],[0.1,220]])
self.stochasticobservingdata=[twodg,twodr,twodi]
self.degrees_of_survey=41253
else:
print "I don't know that survey"
exit()
#convert bandnames into the required formats
for i in range(len(self.bands)):
bandname=self.bands[i]
if bandname=="g":
self.bands[i]="g_SDSS"
if bandname=="r":
self.bands[i]="r_SDSS"
if bandname=="i":
self.bands[i]="i_SDSS"
if bandname=="z":
self.bands[i]="z_SDSS"
if bandname=="F814":
self.bands[i]="F814W_ACS"
degrees_of_whole_sky=41253.
self.f_sky=float(self.degrees_of_survey)/degrees_of_whole_sky