def _download(uri, kwargs, err='Unable to download data at specified URL',
filename = None):
#Create a better filename
query_str = uri.split('?')[1]
pars = {}
for s in query_str.split('&'):
kv = s.split('=')
pars.update({kv[0]:kv[1]})
base_url = uri.split('?')[0]
fname = base_url.split('/')[-1][:-4]
pars.update({'data_type':fname})
snumber = base_url.split('/')[-2]
pars.update({'satellite_number':snumber})
filename = '%s_%s_%s_%s.csv'%(pars['satellite_number'],
pars['data_type'],
pars['fromDate'],
pars['toDate'])
filepath = LightCurve._download(uri,kwargs,filename=filename)
return filepath
