Fixing Astrometry typo

class Astrometry(models.Model):

  ctpye1 = CtypeWcs()

  ctype1 = CtypeWcs()

  ctype2 = CtypeWcs()

  crval1 = models.FloatField()

  crval2 = models.FloatField()

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## Data insertion and retrieval with Django models

# Data insertion and retrieval with Django models

In the following we show some examples in order to perform insertions and retrievals of metadata

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``` python

from imagedb.models import Instrument

instrument = Instrument.objects.get(instrumentName='NISP')

print(instrument.telescopeName)

```

%% Output

    Euclid

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## Creating new objects

In the following we will create a NispRawFrame object. Since the NispRawFrame must have also a DataCotainer (i.e. a file to reference to), we first create a DataContainer instance.

We can see also that the fields that we have defined as composite fields provide some synctactic sugar when we initialize them with simple dictionaries.

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``` python

from imagedb.models import ImageType, Pointing, NispDetector, DataContainer, NispRawFrame

from datetime import datetime

dataFile = DataContainer(

  fileFormat = 'fits',

  formatIdentifier = 'le1.nisprawframe',

  formatVersion = '1.0',

  url = "http://ia2-ownclud.oats.inaf.it/fake/7ff2f203/data/EUC_LE1_NISP_53892-Y-1_20170712T155430.1Z_00.00.fits"

  url = "http://ia2-owncloud.oats.inaf.it/fake/7ff2f203/data/EUC_LE1_NISP_53892-Y-1_20170712T155430.1Z_00.00.fits"

)

# We have to save the data container to the DB before assigning it to a NispRawFrame

dataFile.save()

image = NispRawFrame(exposureTime = 105,

                     imgNumber = 16,

                     naxis1 = 2040,

                     naxis2 = 2040,

                     imageType = {'category':'SCIENCE',

                                  'firstType':'OBJECT',

                                  'secondType':'STD'},

                     observationDateTime = datetime.strptime("2025-06-21T18:27:23.000001",

                                                             "%Y-%m-%dT%H:%M:%S.%f"),

                     observationId = 53892,

                     ditherNumber = 1,

                     instrument = instrument,

                     commandedPointing = {'rightAscension':8.48223045516,

                                          'declination':8.48223045516,

                                          'orientation':64.8793517547},

                     filterWheelPosition = "Y",

                     grismWheelPosition = "OPEN"

                    )

image.frameFile = dataFile

```

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Before saving an object, its surrogate key is still empty, i.e. equal to None

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``` python

print(image.id)

image.save()

print(image.id)

```

%% Output

    None

    3

    2

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``` python

# We can start creating a detector

d11 = NispDetector(detectorId = "11", gain = 1.0, readoutNoise = 0.0, rawFrame = image)

d11.save()

# or we can create the detector starting from the NispRawFrame, using the reversed relationship.

# No need to save the detector in this case. It is done automatically

# Or we can use the create() in order to create and save immediately the new object

NispDetector.objects.create(detectorId = "12", gain = 1.0, readoutNoise = 0.0, rawFrame = image)

# or we can create the detector starting from the NispRawFrame, using the reversed relationship,

# using again the create method

image.detectors.create(

  detectorId = "12",

  detectorId = "13",

  gain = 1.0,

  readoutNoise = 0.0

)

```

%% Output

    <NispDetector: NispDetector object (4)>

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``` python

image.detectors.all()

```

%% Output

    <QuerySet [<NispDetector: NispDetector object (1)>, <NispDetector: NispDetector object (2)>]>

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``` python

image.detectors.all()

```

%% Output

    <QuerySet [<NispDetector: NispDetector object (1)>]>

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``` python

```

    <QuerySet [<NispDetector: NispDetector object (2)>, <NispDetector: NispDetector object (3)>, <NispDetector: NispDetector object (4)>]>