Data for The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: Quasar Properties from Data Release 10 to 12

The absolute flux calibrated spectra for the LAMOST DR 10 to 12 QSO survey. The original spectra are available at the LAMOST Data Archive Server. The spectra are calibrated using (quasi-)simultaneous photometric data from Zwicky Transient Facility (ZTF). Python Example: reading the spectra from astropy.table import Table from astropy.io import fits hdu = fits.open('<.../obsid_scaled.fits>') hdr = hdu[0].header hdr = hdr ra=hdr['RA'] # RA dec=hdr['DEC'] # DEC plateid = hdr['PLANID'] fiberid = hdr['FIBERID'] mjd = hdr['MJD'] OBSID=hdr['OBSID'] data = hdu[1].data wave= data['WAVELENGTH'][0] flux = data['FLUX'][0] ivar = data['IVAR'][0] andmask = data['ANDMASK'][0] ormask =data['ORMASK'][0] err = 1./np.sqrt(ivar)