| AOT | observation | submode | # | scientific | comments |
| type | of | validation | |||
| AOs | with | ||||
| PHT03(P) | multi- | staring point source | 961 | V6 | for standard apertures |
| filter | staring ext. source | 270 | no | ||
| photometry | nodding | 230 | V6 | for standard apertures | |
| chopped | 1134 | V10 | |||
| raster map | 431 | no | |||
| PHT04(P) | multi- | staring point source | 219 | V10 | relative curve of growth |
| aperture | staring ext. source | 36 | V10 | for extent  2arcmin |
|
| photometry | chopped | 17 | no | sequ:  4aper. (120,180) |
|
| PHT05(P) | absolute | staring point source | 57 | V6 | for standard apertures |
| photometry | staring ext. source | 162 | no | ||
| PHT17(P) | sparse map | staring point source | 682 | V6 | for standard apertures |
| 18,19 | photometry | staring ext. source | 524 | no | |
| PHT22(C) | multi- | staring point source | 373 | V7 | |
| filter | staring ext. source | 123 | V7 | ||
| photometry | nodding | 29 | V7 | ||
| chopped | 1887 | V10 | limited by sky confusion | ||
| raster map | 2884 | V8.4 | ff quality for  20RP |
||
| PHT25(C) | absolute | staring point source | 54 | V7 | |
| photometry | staring ext. source | 149 | V7 | ||
| PHT32(C) | oversampled | chopped mapping | 1565 | V10 | partially validated w.r.t. |
| mapping | SB, ff quality | ||||
| PHT37(C) | sparse map | staring point source | 2109 | V7 | |
| 38,39 | photometry | staring ext. source | 710 | V7 | |
| PHT40(S) | spectroscopy | staring point source | 835 | V5 | |
| staring ext. source | 102 | V6 | |||
| chopped | 412 | V6 | |||
| raster map | 135 | V6 | |||
| PHT50(P) | aperture | staring point & | 15 | V7 | interactive processing |
| polarimetry | ext. source | & special FORTRAN routine | |||
| PHT51(C) | array | staring point & | 110 | V7 | interactive processing |
| polarimetry | ext. source | & special FORTRAN routine | |||
| raster map | V7 | beam effects for ext. sources |
Notes ext.: extended ff: detector flat-field RP: raster points
An overview of the scientific validation of the ISOPHOT modes is given in Table 9.2. The 11 AOTs have been divided into 28 submodes and the respective number of executed astronomical observations is given. An observation in multi-filter and multi-aperture mode can comprise several measurements. The sparse map modules have been counted individually. OLP Versions 5 and 6 were released during the ISO mission, OLP Version 7 is the end-of-mission pipeline, OLP Versions 8, 9 and 10 were released during the post-operational phase.