Planck 2013 results. XXXI. Consistency of the Planck data
Abstract
The Planck design and scanning strategy provide many levels of redundancy that can be exploited to provide tests of internal consistency. One of the most important is the comparison of the 70GHz and 100GHz channels. Based on different instrument technologies, with feeds located differently in the focal plane, analysed independently by different teams using different software, and near the minimum of diffuse foreground emission, these channels are in effect two different experiments. The 143GHz channel has the lowest noise level on Planck, and is near the minimum of unresolved foreground emission. In this paper, we analyse the level of consistency achieved in the 2013 Planck data. We concentrate on comparisons between the 70/100/143GHz channel maps and power spectra, particularly over the angular scales of the first and second acoustic peaks, on maps masked for diffuse Galactic emission and for strong unresolved sources. Difference maps covering angular scales from 8deg-15arcmin are consistent with noise, and show no evidence of cosmic microwave background structure. Including small but important corrections for unresolved-source residuals, we demonstrate agreement between 70 and 100GHz power spectra averaged over 70<l<390 at the 0.8% level, and agreement between 143 and 100GHz power spectra of 0.4% over the same l range. These values are within and consistent with the overall uncertainties in calibration given in the Planck 2013 results. We also present results based on the 2013 likelihood analysis showing consistency at the 0.35% between the 100/143/217GHz power spectra. We analyse calibration procedures and beams to determine what fraction of these differences can be accounted for by known approximations or systematic errors that could be controlled even better in the future, reducing uncertainties still further. Several possible small improvements are described...(abridged)
Keywords
Cite
@article{arxiv.1508.03375,
title = {Planck 2013 results. XXXI. Consistency of the Planck data},
author = {Planck Collaboration and P. A. R. Ade and M. Arnaud and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and E. Battaner and K. Benabed and A. Benoit-Levy and J. -P. Bernard and M. Bersanelli and P. Bielewicz and J. R. Bond and J. Borrill and F. R. Bouchet and C. Burigana and J. -F. Cardoso and A. Catalano and A. Challinor and A. Chamballu and H. C. Chiang and R. Christensen and D. L. Clements and S. Colombi and L. P. L. Colombo and F. Couchot and A. Coulais and B. P. Crill and A. Curto and F. Cuttaia and L. Danese and R. D. Davies and R. J. Davis and P. de Bernardis and A. de Rosa and G. de Zotti and J. Delabrouille and F. -X. Desert and C. Dickinson and J. M. Diego and H. Dole and S. Donzelli and O. Dore and M. Douspis and X. Dupac and T. A. Ensslin and H. K. Eriksen and F. Finelli and O. Forni and M. Frailis and A. A. Fraisse and E. Franceschi and S. Galeotta and K. Ganga and M. Giard and J. Gonzalez-Nuevo and K. M. Gorski and S. Gratton and A. Gregorio and A. Gruppuso and J. E. Gudmundsson and F. K. Hansen and D. Hanson and D. L. Harrison and S. Henrot-Versille and C. D. Herranz and S. R. Hildebrandt and E. Hivon and M. Hobson and W. A. Holmes and A. Hornstrup and W. Hovest and K. M. Huffenberger and A. H. Jaffe and T. R. Jaffe and W. C. Jones and E. Keihanen and R. Keskitalo and J. Knoche and M. Kunz and H. Kurki-Suonio and G. Lagache and A. Lahteenmaki and J. -M. Lamarre and A. Lasenby and M. Lattanzi and C. R. Lawrence and R. Leonardi and J. Leon-Tavares and J. Lesgourgues and M. Liguori and P. B. Lilje and M. Lilley and M. Linden-Vornle and M. Lopez-Caniego and P. M. Lubin and J. F. Macias-Perez and D. Maino and N. Mandolesi and M. Maris and P. G. Martin and E. Martinez-Gonzalez and S. Masi and S. Matarrese and P. Mazzotta and P. R. Meinhold and A. Melchiorri and L. Mendes and A. Mennella and S. Mitra and M. -A. Miville-Deschenes and A. Moneti and L. Montier and G. Morgante and D. Mortlock and A. Moss and D. Munshi and J. A. Murphy and P. Naselsky and F. Nati and P. Natoli and H. U. Norgaard-Nielsen and F. Noviello and D. Novikov and I. Novikov and C. A. Oxborrow and L. Pagano and F. Pajot and D. Paoletti and B. Partridge and F. Pasian and G. Patanchon and D. Pearson and T. J. Pearson and O. Perdereau and F. Perrotta and F. Piacentini and M. Piat and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and L. Popa and G. W. Pratt and S. Prunet and J. -L. Puget and J. P. Rachen and M. Reinecke and M. Remazeilles and C. Renault and S. Ricciardi and I. Ristorcelli and G. Rocha and G. Roudier and J. A. Rubino-Martin and B. Rusholme and M. Sandri and D. Scott and V. Stolyarov and R. Sudiwala and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and L. Terenzi and L. Toffolatti and M. Tomasi and M. Tristram and M. Tucci and L. Valenziano and J. Valiviita and B. Van Tent and P. Vielva and F. Villa and L. A. Wade and B. D. Wandelt and I. K. Wehus and S. D. M. White and D. Yvon and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1508.03375},
year = {2015}
}
Comments
27 pages, 27 figures, version matches accepted and published in A&A, 2014, Vol 571, A31, Corresponding author: Charles Lawrence