Narrative:

Once climbing through 10;000 feet I accomplished my flow of turning off the applicable lights and moved the sterile switch to the off position. At that time I informed the first officer (first officer) who was pilot flying that I was going to go off com 1 to communicate to the flight attendant's that we were going to be possibly heading into turbulence for an unforeseeable amount of time. If I remember correctly ATC had notified us earlier that we were in an area of possible moderate precipitation. Once the first officer confirmed he had com 1 I immediate called the flight attendants (flight attendant) on the PA/call function to inform them that I felt it would be unsafe for them to get up and begin a service based on current conditions (rain; beginning of light turbulence). After we were briefly discussing the details on how notification to begin service would begin I immediately switched back to com 1.upon returning on frequency I remember hearing the altitude alerter going off and I notice the first officer was in a descent to 11000 from an altitude that I can't specifically remember as I also noticed an amber TCAS message and if I remember correctly he was also communicating with ATC all at about the same time. I inquired about what has happen since my absence (30 seconds max). He explained that we slightly went above our assigned altitude and that we had gotten a vector from ATC because of our proximity to another aircraft. I inquired ATC about the incident and asked if we needed a number to talk about the situation. After she communicated with what I assume was a supervisor she told us that due to an alert on her end we did. We eventually received a number to call and continued the remainder of the flight without incident.as stated above I had not noticed until returning to com 1 which by then the event had already occurred.I am honestly unsure. Communating with the flight attendant about the change from normal operation due to a safety concerned diverted my attention just long enough from the initiation of a level off at 11;000 feet that I have no recollection of the precise causes of the event.I do believe the weather played a factor as conditions were well beyond a standard day being that it was night; IMC; icing; precipitation and turbulent.I was trying to catch up to current events.I could have possibly waited until a positive level off at 11;000 feet. But at the same time I still felt that the saftey and communication with my crew was also a top priority at the time. Minus the weather a level off was the last was only clearance we had left to accomplish at the time.

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Original NASA ASRS Text

Title: The flight crew of a Bombardier CRJ-900 reported that they neglected to reduce thrust and passed through the assigned altitude resulted in requiring a turn to avoid traffic.

Narrative: Once climbing through 10;000 feet I accomplished my flow of turning off the applicable lights and moved the sterile switch to the off position. At that time I informed the First Officer (FO) who was pilot flying that I was going to go off com 1 to communicate to the FA's that we were going to be possibly heading into turbulence for an unforeseeable amount of time. If I remember correctly ATC had notified us earlier that we were in an area of possible moderate precipitation. Once the FO confirmed he had com 1 I immediate called the Flight Attendants (FA) on the PA/Call function to inform them that I felt it would be unsafe for them to get up and begin a service based on current conditions (rain; beginning of light turbulence). After we were briefly discussing the details on how notification to begin service would begin I immediately switched back to Com 1.Upon returning on frequency I remember hearing the altitude alerter going off and I notice the FO was in a descent to 11000 from an altitude that I can't specifically remember as I also noticed an amber TCAS message and if I remember correctly he was also communicating with ATC all at about the same time. I inquired about what has happen since my absence (30 seconds max). He explained that we slightly went above our assigned altitude and that we had gotten a vector from ATC because of our proximity to another Aircraft. I inquired ATC about the incident and asked if we needed a number to talk about the situation. After she communicated with what I assume was a supervisor she told us that due to an alert on her end we did. We eventually received a number to call and continued the remainder of the flight without incident.As stated above I had not noticed until returning to com 1 which by then the event had already occurred.I am honestly unsure. Communating with the Flight Attendant about the change from normal operation due to a safety concerned diverted my attention just long enough from the initiation of a level off at 11;000 feet that I have no recollection of the precise causes of the event.I do believe the weather played a factor as conditions were well beyond a standard day being that it was night; IMC; icing; precipitation and turbulent.I was trying to catch up to current events.I could have possibly waited until a positive level off at 11;000 feet. But at the same time I still felt that the Saftey and Communication with my crew was also a top priority at the time. Minus the weather a level off was the last was only clearance we had left to accomplish at the time.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.