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Dmitry,

I have to clarify that ocssw/scripts/modis_atteph.py (V2019.3) calls an old api that returns 1 when ATT files are non optimal.

The new ocssw/bin/modis_attpeh (V2022.0) calls a new api that returns 0 even when ATT/EPH files are non optimal.

Bing

Yes, an exit status < 4 indicates the presence of some kind of ATT/EPH data, sometimes NRT, less than optimal.

Hello bijaylaxmi, I tried your file A2005335192500.L1A_LAC with V2022.0. Here is what I did 1) modis_GEO on A2005335192500.L1A_LAC -> AQUA_MODIS.20051201T192500.GEO.hdf 2) extractor on A2005335192500.L1A_LAC with (SWlon=-92.5, SWlat=26, NElon=-87.5, NElat=31) -> AQUA_MODIS.20051201T192500.L1A.sub.nc...

Please try If successful, try modis_GEO again.

What version of SeaDAS are you using? SeaDAS 8.2.0? What tag of OCSSW are you using? V2022.0?

When the PM1ATTNR_NRT and PM1EPHND files are available, the api called by modis_attteph.py returns status 1, because the PM1ATTNR_NRT files are classified as non-optimal. https://oceandata.sci.gsfc.nasa.gov/api/atteph/A/2022118111000/2022118111500 {"files":[["ATT1","PM1ATTNR...

When you use the -d option (Disable download of ancillary files not found on hard disk), it is correct to get the message "Downloads disabled. The following missing file(s) will not be downloaded: PM1EPHND.P2022115.1200.003 PM1ATTNR_NRT.A2022116.1045.061 PM1ATTNR_NRT.A2022116.1040.061 PM1ATTNR_...

Maybe you could try before you try modis_GEO again.

Try to run and then try modis_GEO.py again

Please let us know what version of SeaDAS you are using? SeaDAS 7 or 8? Please also let us know the name of one of modis L1A files that modis_GEO.py failed on. Here is another post regarding modis_GEO. The user has issues with modis L1A files on 2/11/2020. https://forum.earthdata.nasa.gov/viewtopic....