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HIFI instrument and calibration web page
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 Latest updates -- 12 April 2016
- HIPE 14.1 has been released !
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Latest updates -- 11 July 2016
- HIPE 14.2 has been released !
- The first version of the HIFI handbook is now available
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- Check the important calibration updates and associated improvements expected in the HIPE 14.0.1 and upcoming 14.1 reprocessed data - this includes in particular updated sideband gain ratio in bands 1 to 4
- The HIFI products now come with a frequency-dependent intensity calibration uncertainty budget
- Channel flags for spurs are now populated in all HIFI observations (this was limited to spectral scan up to HIPE 13)
- Re-organisation of the HIFI quality flags for a better assessement of issues being relevant or not to the end products
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- Users wishing to import their HIFI data into Gildas/CLASS can now do it directly with the Gildas oct15 release without the need of any previous conversion
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- Users wishing to import their HIFI data into Gildas/CLASS can now do so directly with the Gildas oct15 release without the need of any previous conversion
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> | Overview of HIFI performances and data |
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- HIFI fact sheet A 2-page guide to the HIFI instrument
- A&A paper
 describing the method used to measure stability performance with HIFI (added 4 Oct 2011)
- A&A paper about the optimisation of mapping modes for heterodyne instruments (added 18 March 2014)
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| | Reducing HIFI data |
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| | Recommended User release |
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| | HIPE 14 and Java 8 : please consult the HIPE Known Issues page regarding important information on issues with Java for different versions of HIPE. |
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> | Which data would most benefit from being reprocessed in HIPE 14.1/14.2 ?
If your data have been processed with HIPE 14.1 |
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< | Which data would most benefit from being reprocessed in HIPE 14.1 ? |
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- Isolated problematic processing with 14.1
- A dozen of observations was not properly processed in 14.1 and 14.0.1. The list of those obsids is: 1342197147, 1342210032, 1342216806, 1342219255, 1342219454, 134230216, 1342245299, 1342246507, 1342245997, 1342250406, 1342250721, 1342265972, 1342263227. These observations will be reprocessed correctly with 14.2 - meanwhile, it is possible to use the HIPE 13 products, bearing in mind that all other improvements introduced in the 14.x products will not yet be featured in those products
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< | If your data have been processed with the latest bulk reprocessing (13.0), HIPE 12.0 or HIPE 11.1 |
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> | If your data have been processed with HIPE 14.0.1 |
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- Spectra mean and median statistical numbers
- The HIFI 14.0.1 products suffered from a minor bug leading to a wrong computation of the mean and median spectra values (i.e. a measure of the DSB continuum to first order). This has been repaied in 14.1
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> | If your data have been processed with HIPE 13.0, HIPE 12.0 or HIPE 11.1 |
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- Intensity calibration uncertainty
- HIPE 14 introduces a new product providing an estimated breakdown of the intensity calibration uncertainty. The uncertainties are given separately for each component, as well as in a quadratic sum fashion for all statistically independent elements. This sum applies to the calibration of data in the Ta* scale. Further systematic and random error apply for data converted into different intensity scales (e.g. Tmb or Jy). See further details in section 9 of the DRG.
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