Dear Abhishek,

You can check what other colleges you can get into with your score in the link below

https://engineering.careers360.com/articles/gate-cutoff-for-cse

You might also be able to get new IIITs like IIIT Guwhati, Bhopal, Bhubneshwar and Lucknow to name some, but if you can get into IIIT Allahabad, this probably the best choice available to you.

Coming onto placements, they are totally dependent on two factors

•     Skill Level
•     Type of College
  

Most of the good companies for computer science like Microsoft, Amazon, Samsung, Flipkart etc. don't visit every college campus, but since IIIT Allahabad is a very well know university specifially focussing on IT and CS field, some of top companies do visit the campus.

As per the year 2015-16 report available on it's website, following companies visited the campus.
Accenture
Accolite
Adobe
Amazon
American Express
Arista
Axtria
Barkley
Cisco Systems India Pvt. Ltd.
Citi Corp
Click Lab
Coupon Dunia
D.E.Shaw
Digital Green
Direct I
EXL
Expedia
Flipkart
Freescale
Google
Goldman Sachs
Grey Orange
Grofers
Hashedin
Hike
Housing
HT Media
IBM
Icon Resources
Incture Technology
Infosys
Infurnia Furnishings Pvt. Ltd.
Inmobi
KMPG
Kritikal
Kronos
Kuliza
Linkedin
Mahindra Comviva
Microsoft
Morgan Stanley
Nagaro
Naukri.com
Niki.ai (Techbins)
OFSS
OkuTech
Online Tyari
Pay U
Paytm
Polaris
Power2SME
Practo
Qualcom
RBS
Routofy
Samsung
SAP Labs
Sapient Nitro
Sigmoid
TCS
Tiny Owl
Urbanrestro
Verizon
Walmart
Zopnow
ZS

The minimum package offered was 3.2 LPA and the maximum was 27 LPA.

The average was somewhere in range of 10-11 lacs.

For M.Tech students, the average was about 15 LPA.

Once again, it is dependent on the skill set. IIIT Allahabad is a good place to be, but you will have to work hard to get a decent package at the end of your M.Tech.

For more details about IIIT Allahabad placements have a look at the link below:

https://www.iiita.ac.in/placements/statistics/

For more information about the institute visit the link below:

https://www.careers360.com/university/indian-institute-of-information-technology-allahabad

Official Website IIIT Allahabad:

https://www.iiita.ac.in/institute/

M.Tech Courses offered at IIIT Allahabad:

    Cyber Law and information Security
    Human Computer Interactions
    Information Technology
    Intelligent Systems
    Software Systems
    Robotics

You can find more details here about the courses here:

https://www.careers360.com/university/indian-institute-of-information-technology-allahabad/courses?degree=6

Hope this helps.