JSPWiki: BigEISFitsFiles

Hi,

There are a few big EIS fits files which are not easy to be processed by "eis_prep", :-(, for example:

20/eis_l0_20070820_170353.fits.gz 122M
21/eis_l0_20070821_000022.fits.gz 118M
21/eis_l0_20070821_133226.fits.gz 117M

Click to show more fits files
1. 22/eis_l0_20070822_023009.fits.gz 116M
2. 23/eis_l0_20070823_191420.fits.gz 94M
3. 24/eis_l0_20070824_001531.fits.gz 92M
4. 24/eis_l0_20070824_105128.fits.gz 120M
5. 25/eis_l0_20070825_015152.fits.gz 99M
6. 25/eis_l0_20070825_050529.fits.gz 95M
7. 25/eis_l0_20070825_093750.fits.gz 89M
8. 26/eis_l0_20070826_005803.fits.gz 97M
9. 26/eis_l0_20070826_055213.fits.gz 92M
10. 27/eis_l0_20070827_045520.fits.gz 97M
11. 27/eis_l0_20070827_170835.fits.gz 81M
12. 27/eis_l0_20070827_210723.fits.gz 79M
13. 28/eis_l0_20070828_005937.fits.gz 72M

These fits files are mostly generated by study "": doing "full-ccd" scan (with often over 80 raster positions).

The typical error message is: "unable to allocate memory to make array". However, the machine that running "eis_prep" has fairly big enough memory (4GB). One way to let "eis_prep" keep running is to do only DC-removal and ABS calibration, not to do CR and HP removal.

Questions:

Is there any way to do 'eis_prep' with these big fits files? Or,
Do we need to suggest that normally try to avoid using full-ccd scan with too many raster postions?

Regards,
JianSun

18:27:39 27-Apr-2025 BST