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9.1 Overview  

The quality and reliability of data products and documentation depend on several aspects. In this chapter we summarize the pending issues related to documentation, to product reliability, and, closely connected to the products, to the OLP software.

In section 9.2 the shortcomings of the present version of the documentation are given.

In section 9.3 we give the present status of the scientific validity of products of the ISOPHOT AOTs. The scientific validity of an observing mode is decided after thorough evaluation of the corresponding Auto Analysis (AAR) products (see chapter 8) of observations of known test targets. Only when the results are according to the expectations a mode is declared ``scientifically valid''.

The reliability of the OLP products is best described by the photometric accuracies that can be achieved per observing mode. The photometric accuracies for those modes that are scientifically validated are presented in `ISOPHOT calibration accuracies' [11]. A full discussion of the error budgets and resulting uncertainties is given in `ISOPHOT error budgets' [15]. The sections on scientific validation have been taken from the OLP Version 7 validation report by Klaas and Radovich [12]. This document is available for those who would like to compare their data with the results from test cases.

In section 9.4 of this chapter the present (known) limitations and caveats on the ISOPHOT data and software are given. Issues concerning incomplete instrumental calibrations and pending software implementation are discussed in detail.