Actually Astakvarga Rekha is indicating auspiciousness of planet and Bindu is indicating inauspiciousness.
As we know that any planet is consider good in his own sign, own excellent sign, own mooltrikona sign and own friends sign.
Any planet is consider bad when it is placed in his inimical sign or debilitating sign or ast due to Sun.
Again any planet is consider badly placed if they placed in trik house.
Again we know that if a planet having more than 4 Rekha then it is consider auspicious. If having less than 4 Rekha then inauspicious. If 4 Rekha then consider neutral.
Now come to our topic.
1)Any planet is consider very auspicious if planet is placed in own sign, excellent sign or Mooltrikona sign or friendly sign and having more than 4 Rekha(means 5 to 8 Rekha).
2)If any planet in above condition having less than 4 Rekha then planet is good but not so much capacity to give auspicious results. They may produce evil results as per as per as Rekha is reduced. If planet has 0 Rekha then it may be harmful in positive ways.
3)If any planet in inimical Sign or badly placed(in trik house) or debilitating sign but having more than 4 Rekha then it may be capable to give some good fruits.
4)If any planet in inimical Sign or badly placed or debilitating or ast and having less then 4 Rekha then planet may be harmful. His negative results may be improve as planet’s Rekha may be reduced.