<div dir="ltr">Yes, the raw data is likely corrupt. When you see the "image without noise" pygac is probably automatically cropping off the noise for you.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 21 Aug 2024 at 21:10, Francisco Vicent <<a href="mailto:franciscovicent@outlook.com">franciscovicent@outlook.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>

  
  <div>
    <p>Do you suggest the image itself might be corrupt?</p>
    <p>I can see the top of the image without noise if I extract the
      individual bands using pygac and then I create a TCI with GDAL:<br>
    </p>
    <p><a href="https://i.imgur.com/OspvQi7.png" target="_blank">https://i.imgur.com/OspvQi7.png</a></p>
    <div>El 21/8/2024 a las 10:49, Andrew Brooks
      escribió:<br>
    </div>
    <blockquote type="cite">
      
      <div dir="ltr">That's completely normal for data which has been
        received from satellites that do not have on-board error
        detection/correction such as NOAA-n (n<20)</div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Tue, 20 Aug 2024 at 22:05,
          Francisco Vicent via gdal-dev <<a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello
          there, GDAL community!<br>
          <br>
          I'm experiencing some issues while warping a NOAA 19 image.
          I'm running <br>
          a simple:<br>
          <br>
          gdalwarp NSS.LHRR.NP.D16020.S1834.E1846.B3581920.WI warped.tif<br>
          <br>
          When I display the result in QGIS, it seems that the image is
          a little <br>
          cropped and has some noise at the top:<br>
          <br>
          <a href="https://imgur.com/a/gZW6Sya" rel="noreferrer" target="_blank">https://imgur.com/a/gZW6Sya</a><br>
          <br>
          I've also tried with NOAA 14 and 16 datasets and they look as
          expected, <br>
          so I guess that the NOAA-19 format might not be fully
          supported.<br>
          <br>
          Anyway, I would like to hear from you if there's something I
          am missing, <br>
          before filing an issue or attempting a fix.<br>
          <br>
          Thanks in advance.<br>
          <br>
          Regards,<br>
          Francisco<br>
          <br>
          <br>
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        </blockquote>
      </div>
    </blockquote>
  </div>

</blockquote></div>