blimpy/calib_utils/fluxcal.py
def diode_spec(calON_obs,calOFF_obs,calflux,calfreq,spec_in,average=True,oneflux=False,**kwargs):
    '''
    Calculate the coarse channel spectrum and system temperature of the noise diode in Jy given two noise diode
    measurements ON and OFF the calibrator source with the same frequency and time resolution

    Parameters
    ----------
    calON_obs : str
        (see f_ratios() above)
    calOFF_obs : str
        (see f_ratios() above)
    calflux : float
        Known flux of calibrator source at a particular frequency
    calfreq : float
        Frequency where calibrator source has flux calflux (see above)
    spec_in : float
        Known power-law spectral index of calibrator source. Use convention flux(frequency) = constant * frequency^(spec_in)
    average : boolean
        Use average=True to return noise diode and Tsys spectra averaged over frequencies
    '''
    #Load frequencies and calculate number of channels per coarse channel
    obs = Waterfall(calON_obs,max_load=150)
    freqs = obs.populate_freqs()
    ncoarse = obs.calc_n_coarse_chan()
    nchans = obs.header['nchans']
    chan_per_coarse = nchans/ncoarse

    f_ON, f_OFF = f_ratios(calON_obs,calOFF_obs,chan_per_coarse,**kwargs)

    #Obtain spectrum of the calibrator source for the given frequency range
    centerfreqs = get_centerfreqs(freqs,chan_per_coarse)
    calfluxes = get_calfluxes(calflux,calfreq,spec_in,centerfreqs,oneflux)

    #C_o and Tsys as defined in van Straten et al. 2012
    C_o = calfluxes/(1/f_ON-1/f_OFF)
    Tsys = C_o/f_OFF

    #return coarse channel diode spectrum
    if average==True:
        return np.mean(C_o),np.mean(Tsys)
    else:
        return C_o,Tsys
def diode_spec(calON_obs,calOFF_obs,calflux,calfreq,spec_in,average=True,oneflux=False,**kwargs):
    '''
    Calculate the coarse channel spectrum and system temperature of the noise diode in Jy given two noise diode
    measurements ON and OFF the calibrator source with the same frequency and time resolution

    Parameters
    ----------
    calON_obs : str
        (see f_ratios() above)
    calOFF_obs : str
        (see f_ratios() above)
    calflux : float
        Known flux of calibrator source at a particular frequency
    calfreq : float
        Frequency where calibrator source has flux calflux (see above)
    spec_in : float
        Known power-law spectral index of calibrator source. Use convention flux(frequency) = constant * frequency^(spec_in)
    average : boolean
        Use average=True to return noise diode and Tsys spectra averaged over frequencies
    '''
    #Load frequencies and calculate number of channels per coarse channel
    obs = Waterfall(calON_obs,max_load=150)
    freqs = obs.populate_freqs()
    ncoarse = obs.calc_n_coarse_chan()
    nchans = obs.header['nchans']
    chan_per_coarse = nchans/ncoarse

    f_ON, f_OFF = f_ratios(calON_obs,calOFF_obs,chan_per_coarse,**kwargs)

    #Obtain spectrum of the calibrator source for the given frequency range
    centerfreqs = get_centerfreqs(freqs,chan_per_coarse)
    calfluxes = get_calfluxes(calflux,calfreq,spec_in,centerfreqs,oneflux)

    #C_o and Tsys as defined in van Straten et al. 2012
    C_o = calfluxes/(1/f_ON-1/f_OFF)
    Tsys = C_o/f_OFF

    #return coarse channel diode spectrum
    if average==True:
        return np.mean(C_o),np.mean(Tsys)
    else:
        return C_o,Tsys
def diode_spec ( calON_obs , calOFF_obs , calflux , calfreq , spec_in , average = True , oneflux = False , * * kwargs ) : #Load frequencies and calculate number of channels per coarse channel obs = Waterfall ( calON_obs , max_load = 150 ) freqs = obs . populate_freqs ( ) ncoarse = obs . calc_n_coarse_chan ( ) nchans = obs . header [ 'nchans' ] chan_per_coarse = nchans / ncoarse f_ON , f_OFF = f_ratios ( calON_obs , calOFF_obs , chan_per_coarse , * * kwargs ) #Obtain spectrum of the calibrator source for the given frequency range centerfreqs = get_centerfreqs ( freqs , chan_per_coarse ) calfluxes = get_calfluxes ( calflux , calfreq , spec_in , centerfreqs , oneflux ) #C_o and Tsys as defined in van Straten et al. 2012 C_o = calfluxes / ( 1 / f_ON - 1 / f_OFF ) Tsys = C_o / f_OFF #return coarse channel diode spectrum if average == True : return np . mean ( C_o ) , np . mean ( Tsys ) else : return C_o , Tsys
Calculate the coarse channel spectrum and system temperature of the noise diode in Jy given two noise diode
    measurements ON and OFF the calibrator source with the same frequency and time resolution

    Parameters
    ----------
    calON_obs : str
        (see f_ratios() above)
    calOFF_obs : str
        (see f_ratios() above)
    calflux : float
        Known flux of calibrator source at a particular frequency
    calfreq : float
        Frequency where calibrator source has flux calflux (see above)
    spec_in : float
        Known power-law spectral index of calibrator source. Use convention flux(frequency) = constant * frequency^(spec_in)
    average : boolean
        Use average=True to return noise diode and Tsys spectra averaged over frequencies
Calculate the coarse channel spectrum and system temperature of the noise diode in Jy given two noise diode measurements ON and OFF the calibrator source with the same frequency and time resolution