Planck early results. VI. The High Frequency Instrument data processing

Understand

We describe the processing of the 336 billion raw data samples from the High Frequency Instrument (HFI) which we performed to produce six temperature maps from the first 295 days of Planck-HFI survey data.

• These maps provide an accurate rendition of the sky emission at 100, 143, 217, 353, 545 and 857 GHz with an angular resolution ranging from 9.9 to 4.4^2.
• The white noise level is around 1.5 {\mu}K degree or less in the 3 main CMB channels (100--217GHz).
• The photometric accuracy is better than 2% at frequencies between 100 and 353 GHz and around 7% at the two highest frequencies.