PLANCK Data Receipt

The major institutional interfaces and facilities are called out in the Science Implementation Plan (SIP).

FINDAS (FIRST Integrated Network and Archive System) will receive the Planck telemetry
DPC (Geneva) has priority and responsibility to receive the raw Planck telemetry stream from FINDAS.

link speed ~1 megabaud for transfer of data from FINDAS to DPC
comonalities between instruments (and FIRST) to be exploited
Data decompression - The DPC is responsible for the decompression of the data as telemetered

on-board computer (averagering?) compression
telemetry system compression and error-correcting code
FINDAS (e.g. bit order reversal etc)
Network and hardware

Data tracking and archiving - making sure all the data are received and stored for further use
Make data available for

quick look software and mission status (for MOC)
including real-time assessment of instrument and data status
tinstrument performance monitoring
data quality checking
necessary investigations of raw data

Remote Users and Institutions

Mission Planning group concerned with specific source scans or intermediate results
Engineering reviews of instrument and spacecraft performance
...

The bulk of these data receipt tasks are most appropriate for computer science and data handling specialists. The primary points of interactions with the LFI science team is in defining the steps taken by the Planck on-board computers and in what kinds of data

are needed for the quick-look, real-time, monitoring, and quality checking and any special investigations of performance. It is likely that the data volume is sufficiently large that the data will be separated into relevant streams by special software for long term trending and investigations.