Trying to validate this XML instance
I am receiving this XML file which I would like to validate. Ideally I should not edit this XML file at all. What tool can I use to do that ? I tried python/lxml and xmllint but none of them allow setting the default namespace for the XML instance:


    <?xml version="1.0" encoding="UTF-8"?>
    <CsaMscData>
      <MscHeader Version="SV10"/>
      <REGISTRATION_MATRIX>
        <BASE_OBJECT_INFO>
          <PADDING_DATA_FLAG>false</PADDING_DATA_FLAG>
          <NO_DATA_FLAG>true</NO_DATA_FLAG>
        </BASE_OBJECT_INFO>
        <MATRIX>0.99768257087730505,-0.06775286248296480,0.00624799111837611,-13.94377645859601600,0.06131919890246099,0.93512585266229120,0.34896933322081974,305.74417624498307000,-0.02948632926647999,-0.34777749971495792,0.93711331602875081,35.13001338466752800,3*0.00000000000000000,1.00000000000000020</MATRIX>
        <MATRIX_ID>1.3.12.2.1107.5.1.4.28334.4.0.4056501222952849:1.3.12.2.1107.5.1.4.28334.4.0.4056484330893172_1.3.12.2.1107.5.2.32.35065.2010021811070138240320629.0.0.0:1.3.12.2.1107.5.2.32.35065.1.20100218105150375.0.0.0</MATRIX_ID>
        <MATRIX_TYPE>8</MATRIX_TYPE>
        <CENTER_DS1>1064</CENTER_DS1>
        <WIDTH_DS1>200</WIDTH_DS1>
        <CENTER_DS2>479</CENTER_DS2>
        <WIDTH_DS2>994</WIDTH_DS2>
        <LUT_DS1>GrayScale08.clut</LUT_DS1>
        <LUT_DS2>HotBody08.clut</LUT_DS2>
        <MIX>0.50000000000000000</MIX>
        <THRMIN_DS1>0</THRMIN_DS1>
        <THRMAX_DS1>4095</THRMAX_DS1>
        <THRMIN_DS2>0</THRMIN_DS2>
        <THRMAX_DS2>4095</THRMAX_DS2>
      </REGISTRATION_MATRIX>
    </CsaMscData>

The XSD is (truncated)


    <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.siemens.com/med/syngo/SiemensNonImageCSAData" 
     xmlns:NS="http://www.siemens.com/med/syngo/SiemensNonImageCSAData" targetNamespace="http://www.siemens.com/med/syngo/SiemensNonImageCSAData" version="1.0">
      <xs:annotation>
        <xs:documentation>
    In a registration context, instances of this schema are written into the
    "Siemens Non Image IOD::CSA Non Image::CSA Data Info" (0029,xx10) attribute.
    Note: we assume all elements to be mandatory, i.e. minOccurs="1" and maxOccurs="1".
    </xs:documentation>
      </xs:annotation>
      <xs:element name="CsaMscData">

Thanks for any hints !
Trying to validate this XML instance
===

I am receiving this XML file which I would like to validate. Ideally I should not edit this XML file at all. What tool can I use to do that ? I tried python/lxml and xmllint but none of them allow setting the default namespace for the XML instance:


    <?xml version="1.0" encoding="UTF-8"?>
    <CsaMscData>
      <MscHeader Version="SV10"/>
      <REGISTRATION_MATRIX>
        <BASE_OBJECT_INFO>
          <PADDING_DATA_FLAG>false</PADDING_DATA_FLAG>
          <NO_DATA_FLAG>true</NO_DATA_FLAG>
        </BASE_OBJECT_INFO>
        <MATRIX>0.99768257087730505,-0.06775286248296480,0.00624799111837611,-13.94377645859601600,0.06131919890246099,0.93512585266229120,0.34896933322081974,305.74417624498307000,-0.02948632926647999,-0.34777749971495792,0.93711331602875081,35.13001338466752800,3*0.00000000000000000,1.00000000000000020</MATRIX>
        <MATRIX_ID>1.3.12.2.1107.5.1.4.28334.4.0.4056501222952849:1.3.12.2.1107.5.1.4.28334.4.0.4056484330893172_1.3.12.2.1107.5.2.32.35065.2010021811070138240320629.0.0.0:1.3.12.2.1107.5.2.32.35065.1.20100218105150375.0.0.0</MATRIX_ID>
        <MATRIX_TYPE>8</MATRIX_TYPE>
        <CENTER_DS1>1064</CENTER_DS1>
        <WIDTH_DS1>200</WIDTH_DS1>
        <CENTER_DS2>479</CENTER_DS2>
        <WIDTH_DS2>994</WIDTH_DS2>
        <LUT_DS1>GrayScale08.clut</LUT_DS1>
        <LUT_DS2>HotBody08.clut</LUT_DS2>
        <MIX>0.50000000000000000</MIX>
        <THRMIN_DS1>0</THRMIN_DS1>
        <THRMAX_DS1>4095</THRMAX_DS1>
        <THRMIN_DS2>0</THRMIN_DS2>
        <THRMAX_DS2>4095</THRMAX_DS2>
      </REGISTRATION_MATRIX>
    </CsaMscData>

The XSD is (truncated)


    <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.siemens.com/med/syngo/SiemensNonImageCSAData" 
     xmlns:NS="http://www.siemens.com/med/syngo/SiemensNonImageCSAData" targetNamespace="http://www.siemens.com/med/syngo/SiemensNonImageCSAData" version="1.0">
      <xs:annotation>
        <xs:documentation>
    In a registration context, instances of this schema are written into the
    "Siemens Non Image IOD::CSA Non Image::CSA Data Info" (0029,xx10) attribute.
    Note: we assume all elements to be mandatory, i.e. minOccurs="1" and maxOccurs="1".
    </xs:documentation>
      </xs:annotation>
      <xs:element name="CsaMscData">

Thanks for any hints !