Using Ekos I have taken some FITS images with my QSI 583 camera and when I open them using Nebulosity and view the information it shows the gain setting as zero. The camera supports two settings, Low and High.
When taking images with Nebulosity Low is zero and high is one. Low is used when binning and I was not binning.
I have the gain set to High in the control panel.
Is Ekos writing this incorrectly or is there some other explanation?
Also the creator is shown as 'Unknown' and the pixel size 0.00 x 0.00.

Can you link to the FITS file?

www.dropbox.com/s/43dmgzldl5z9my0/Moon.fits?dl=0

I have extracted the file header and can see that Celsius is spelt incorrectly and some of the other issues are probably due to the precision length and the gain issue is probably related as much to Nebulosity as INDI.

SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 3326 / length of data axis 1
NAXIS2 = 2504 / length of data axis 2
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BZERO = 32768 / offset data range to that of unsigned short
BSCALE = 1 / default scaling factor
INSTRUME= 'QSI CCD ' / CCD Name
TELESCOP= 'Telescope Simulator' / Telescope name
OBSERVER= 'Unknown ' / Observer name
OBJECT = 'Unknown ' / Object name
EXPTIME = 0.200000002980232 / Total Exposure Time (s)
CCD-TEMP= -0.2 / CCD Temperature (Celcius)
PIXSIZE1= 5.40000009536743 / Pixel Size 1 (microns)
PIXSIZE2= 5.40000009536743 / Pixel Size 2 (microns)
XBINNING= 1 / Binning factor in width
YBINNING= 1 / Binning factor in height
FRAME = 'Light ' / Frame Type
FILTER = 'H ' / Filter
DATE-OBS= '2017-04-06T11:10:26.044' / UTC start date of observation
COMMENT Generated by INDI
EPERADU = 0.5 / Electrons per ADU
END

I corrected the misspelling and used floats for pixel size. But for the gain it could be either High, Low, or set to Auto.

Creator is unknown because you didn't add an observer in Ekos. There is a "Select Observer" button in the Sequence Queue toolbar.

Jasem,

I would say the gain can only be high or low. Auto is just a setting that allows the application to choose either high or low.

I have investigated this a bit further and find that Nebulosity uses GAIN whereas Ekos is using EPERADU, it would be useful to me if Ekos could also set GAIN.

I have included a header below to see what the differences are and it is obvious that only some fields are standard,it is a pity as having standards can be so useful.
Nebulosity has a creator but no observer.

SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 3326 / length of data axis 1
NAXIS2 = 2504 / length of data axis 2
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BZERO = 32768 / offset data range to that of unsigned short
BSCALE = 1 / default scaling factor
CREATOR = 'Nebulosity v3.1.8' / program and version that created this file
INSTRUME= 'QSI 583ws HW 06.00.00 FW 05.02.06 S/N 00504126' / instrument name
DATE = '2013-10-08T09:21:09' / UTC date that FITS file was created
DATE-OBS= '2013-10-08T09:20:51' / YYYY-MM-DDThh:mm:ss observation start, UT
XPIXSZ = 5.4 / X pixel size microns
YPIXSZ = 5.4 / Y pixel size microns
CCD-TEMP= -15. / CCD temp in C
EXPOSURE= 0.5 / Exposure time
GAIN = 1 / Camera gain
OFFSET = 0 / Camera offset
BIN_MODE= 1 / Camera binning mode
ARRAY_TY= 0 / CCD array type
XOFFSET = 0 / Debayer x offset
YOFFSET = 1 / Debayer y offset
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
EXPTIME = 0.5 / Exposure time
FILTER = 'Filter 5' / Optical filter name
END

I have just noticed that some of lines in the example have a line through them that I did not insert and have no idea why, but it can be ignored.