Use of upper limits

[YourVoicee]

Hi! I use WISE and GALEX photometric data, and as is known, W4(and often W3) are not true values, but upper limits. The documentation in the answers to questions section provides recommendations on the use of upper limits. The option of setting the flux to zero and the uncertainty to the 1-sigma upper limit looks easier to implement. But I have some questions. How to estimate the error of this method? In addition, when displaying data, the upper limits look incorrect - long red lines (Figure). Can you please tell me how to display the upper limits correctly (using common symbols. For example, a triangle).

But as far as I understand the second option (https://ui.adsabs.harvard.edu/abs/2012PASP ..124.1208S/abstract ) is more preferable to use. Can you give , please, a couple of recommendations about its implementation in the code.

P.S. Thank you for the opportunity to leave questions here, as well as for the opportunity to follow the questions and suggestions of other users. I hope the topic of upper limits is relevant for someone else.

[bd-j]

Hi @YourVoicee I missed this comment somehow, sorry. The more correct treatment of upper limits is not implemented in the code anywhere.

I agree the upper limits you have do not look correct on the plot . I don't know where you got your limits from or how you included them in the observational data or how the plot was generated, so I can't help there.