Item 2. Properties Not applicable on reliance of Relief Letters
Item 3.
Item 3. Legal Proceedings There were no legal proceedings.
Item 4.
Item 4. Submission of Matters to a Vote of Security Holders There were no matters submitted to a vote of the Security Holders.
PART II
Item 5.
Item 5. Market for Registrant's Common Equity and Related Stockholder matters There were less than 300 participants in the DTC system holding positions in the Cede certificates. The following were Noteholders and Certificateholders of record as of the end of the reporting year. Credit Suisse First Boston Mortgage Securities Corp Mortgage -Backed Pass-Through Certificates, Series 2001-33 Class I-A-1 Cede & Co. Series 2001-33 Class I-A-2 Cede & Co. Series 2001-33 Class I-A-3 Cede & Co. Series 2001-33 Class I-A-4 Cede & Co. Series 2001-33 Class I-A-5 Cede & Co. Series 2001-33 Class I-A-6 Cede & Co. Series 2001-33 Class I-A-7 Cede & Co. Series 2001-33 Class I-A-8 Cede & Co. Series 2001-33 Class I-A-9 Cede & Co. Series 2001-33 Class I-A-10 Cede & Co. Series 2001-33 Class I-A-11 Cede & Co. Series 2001-33 Class I-A-12 Cede & Co. Series 2001-33 Class I-A-13 Cede & Co. Series 2001-33 Class I-A-14 Cede & Co. Series 2001-33 Class I-A-15 Cede & Co. Series 2001-33 Class I-A-16 Cede & Co. Series 2001-33 Class I-A-17 Cede & Co. Series 2001-33 Class I-A-18 Cede & Co. Series 2001-33 Class I-A-19 Cede & Co. Series 2001-33 Class I-A-20 Cede & Co. Series 2001-33 Class I-A-21 Cede & Co. Series 2001-33 Class I-A-22 Cede & Co. Series 2001-33 Class I-A-23 Cede & Co. Series 2001-33 Class I-A-24 Cede & Co. Series 2001-33 Class I-A-25 Cede & Co. Series 2001-33 Class I-A-26 Cede & Co. Series 2001-33 Class I-A-27 Cede & Co. Series 2001-33 Class I-A-28 Cede & Co. Series 2001-33 Class I-A-29 Cede & Co. Series 2001-33 Class I-A-30 Cede & Co. Series 2001-33 Class I-A-31 Cede & Co. Series 2001-33 Class II-A-1 Cede & Co. Series 2001-33 Class II-A-2 Cede & Co. Series 2001-33 Class II-A-3 Cede & Co. Series 2001-33 Class II-A-4 Cede & Co. Series 2001-33 Class II-A-5 Cede & Co. Series 2001-33 Class II-A-6 Cede & Co. Series 2001-33 Class II-A-7 Cede & Co. Series 2001-33 Class II-A-8 Cede & Co. Series 2001-33 Class II-A-9 Cede & Co. Series 2001-33 Class II-A-10 Cede & Co. Series 2001-33 Class II-A-11 Cede & Co. Series 2001-33 Class II-A-12 Cede & Co. Series 2001-33 Class II-A-13 Cede & Co. Series 2001-33 Class II-A-14 Cede & Co. Series 2001-33 Class II-A-15 Cede & Co. Series 2001-33 Class II-A-16 Cede & Co. Series 2001-33 Class II-A-17 Cede & Co. Series 2001-33 Class II-A-18 Cede & Co. Series 2001-33 Class II-A-19 Cede & Co. Series 2001-33 Class II-A-20 Cede & Co. Series 2001-33 Class II-A-21 Cede & Co. Series 2001-33 Class II-A-22 Cede & Co. Series 2001-33 Class II-A-23 Cede & Co. Series 2001-33 Class II-A-24 Cede & Co. Series 2001-33 Class II-A-25 Cede & Co. Series 2001-33 Class II-A-26 Cede & Co. Series 2001-33 Class II-A-27 Cede & Co. Series 2001-33 Class II-A-28 Cede & Co. Series 2001-33 Class II-A-29 Cede & Co. Series 2001-33 Class III-A-1 Cede & Co. Series 2001-33 Class III-A-2 Cede & Co. Series 2001-33 Class III-A-3 Cede & Co. Series 2001-33 Class III-A-4 Cede & Co. Series 2001-33 Class III-A-5 Cede & Co. Series 2001-33 Class III-A-6 Cede & Co. Series 2001-33 Class III-A-7 Cede & Co. Series 2001-33 Class IV-A-1 Cede & Co. Series 2001-33 Class A-X Cede & Co. Series 2001-33 Class III-X Cede & Co. Series 2001-33 Class IV-X Cede & Co. Series 2001-33 Class A-P Cede & Co. Series 2001-33 Class IV-P Cede & Co. Series 2001-33 Class C-B-1 Cede & Co. Series 2001-33 Class C-B-2 Cede & Co. Series 2001-33 Class C-B-3 Cede & Co. Series 2001-33 Class C-B-4 Credit Suisse First Boston 				 11 Madison Ave., 4th Floor 				 New York, NY 10010 Series 2001-33 Class C-B-5 Credit Suisse First Boston 				 11 Madison Ave., 4th Floor 				 New York, NY 10010 Series 2001-33 Class C-B-6 Credit Suisse First Boston 				 11 Madison Ave., 4th Floor 				 New York, NY 10010 Series 2001-33 Class III-B-1 Cede & Co. Series 2001-33 Class III-B-2 Cede & Co. Series 2001-33 Class III-B-3 Cede & Co. Series 2001-33 Class III-B-4 Credit Suisse First Boston 				 11 Madison Ave., 4th Floor 				 New York, NY 10010 Series 2001-33 Class III-B-5 Credit Suisse First Boston 				 11 Madison Ave., 4th Floor 				 New York, NY 10010 Series 2001-33 Class III-B-6 Credit Suisse First Boston 				 11 Madison Ave., 4th Floor 				 New York, NY 10010
There is no established public trading market for the notes.
Item 9.
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosu Information required by Item 304 of Reg. S-K.
There were no changes in and/or disagreements with Accountants on Accounting and Financial Disclosures.
PART IV
Item 12.
Item 12. Security Ownership of Certain Beneficial Owners and Management The Notes are represented by one or more notes registered in the name of Cede & Co., the nominee of The Depository Trust Company. An investor holding Notes is not entitled to receive a certificate representing such Note, except in limited circumstances. Accordingly, Cede & Co. is the sole holder of Notes, which it holds on behalf of brokers, dealers, banks and other participants in the DTC system. Such participants may hold Notes for their own accounts or for the accounts of their customers. The address of Cede & Co. is: Cede & Co. c/o The Depository Trust Company Seven Hanover Square New York, New York 10004
Item 13.
Item 13. Certain Relationships and Related Transactions. There has not been, and there is not currently proposed, any transactions or series or transactions, to which any of the Trust, the Registrant, the Trustee or the Servicer is a party with any Noteholder who, to the knowledge of the Registrant and Servicer, owns of record or beneficially more than five percent of the Notes.
Item 14.
Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K
(a) 1. Not Applicable 2. Not Applicable 3. Exhibits 99.1 Annual Summary Statement 99.2 Annual Statement as to Compliance. 99.3 Annual Independent Public Accountant's Servicing Report.
(b) Reports on Form 8-K The registrant has filed Current Reports on Form 8-K with the Securities and Exchange Commission dated: None
(c) See (a) 3 above
(d) Not Applicable
SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Credit Suisse First Boston Mortgage Securities Corp Mortgage -Backed Pass-Through Certificates, Series 2001-33
/s/ Mary Fonti, Vice President Bank One, NA
Date: March 31, 2002
EXHIBIT INDEX
Exhibit Number Description 99.1 Annual Summary Statement 99.2 Annual Statement of Compliance 99.3 Report of Independent Accountants
EXHIBIT 99.1 -- Summary of Aggregate Amounts or End of Year Amounts for the period ending December 31, 2001
Credit Suisse First Boston Mortgage Securities Corp Mortgage -Backed Pass-Through Certificates, Series 2001-33 Summary of Aggregate Amounts or End of Year Amounts
Pool Balance $1,248,216,432.99 Principal Collections $0.00 Realized Loss $0.00 Gross Interest Collections (1) $0.00 Servicer Fees $0.00 Trustee Fees $0.00
(1) Includes prepayment premiums if applicable.
Deliquency Information Number Stated Principal Bal 30-59 days 0 $0.00 60-89 days 0 $0.00 90+ days 0 $0.00 Foreclosures 0 $0.00 Bankruptcies 0 $0.00 REO Properties 0 $0.00
Certificate Balance Interest Principal
Class I-A-1 $101,785,000.00 $0.00 $0.00 Class I-A-2 $2,948,000.00 $0.00 $0.00 Class I-A-3 $31,000,000.00 $0.00 $0.00 Class I-A-4 $43,294,032.00 $0.00 $0.00 Class I-A-5 $2,292,000.00 $0.00 $0.00 Class I-A-6 $5,848,000.00 $0.00 $0.00 Class I-A-7 $2,471,000.00 $0.00 $0.00 Class I-A-8 $4,451,000.00 $0.00 $0.00 Class I-A-9 $2,948,000.00 $0.00 $0.00 Class I-A-10 $17,131,000.00 $0.00 $0.00 Class I-A-11 $1,804,462.00 $0.00 $0.00 Class I-A-12 $429,231.00 $0.00 $0.00 Class I-A-13 $350,000.00 $0.00 $0.00 Class I-A-14 $350,000.00 $0.00 $0.00 Class I-A-15 $350,000.00 $0.00 $0.00 Class I-A-16 $350,000.00 $0.00 $0.00 Class I-A-17 $300,000.00 $0.00 $0.00 Class I-A-18 $300,000.00 $0.00 $0.00 Class I-A-19 $300,000.00 $0.00 $0.00 Class I-A-20 $300,000.00 $0.00 $0.00 Class I-A-21 $300,000.00 $0.00 $0.00 Class I-A-22 $300,000.00 $0.00 $0.00 Class I-A-23 $300,000.00 $0.00 $0.00 Class I-A-24 $300,000.00 $0.00 $0.00 Class I-A-25 $300,000.00 $0.00 $0.00 Class I-A-26 $300,000.00 $0.00 $0.00 Class I-A-27 $300,000.00 $0.00 $0.00 Class I-A-28 $300,000.00 $0.00 $0.00 Class I-A-29 $106,960,000.00 $0.00 $0.00 Class I-A-30 $106,960,000.00 $0.00 $0.00 Class I-A-31 $217,000.00 $0.00 $0.00 Class II-A-1 $104,500,000.00 $0.00 $0.00 Class II-A-2 $32,677,712.00 $0.00 $0.00 Class II-A-3 $76,596,000.00 $0.00 $0.00 Class II-A-4 $54,321,758.00 $0.00 $0.00 Class II-A-5 $7,109,703.00 $0.00 $0.00 Class II-A-6 $19,832,359.00 $0.00 $0.00 Class II-A-7 $50,815,000.00 $0.00 $0.00 Class II-A-8 $33,170,000.00 $0.00 $0.00 Class II-A-9 $13,355,000.00 $0.00 $0.00 Class II-A-10 $1,404,000.00 $0.00 $0.00 Class II-A-11 $10,445,000.00 $0.00 $0.00 Class II-A-12 $4,000,000.00 $0.00 $0.00 Class II-A-13 $11,637,000.00 $0.00 $0.00 Class II-A-14 $1,214,000.00 $0.00 $0.00 Class II-A-15 $6,806,000.00 $0.00 $0.00 Class II-A-16 $6,300,000.00 $0.00 $0.00 Class II-A-17 $2,139,000.00 $0.00 $0.00 Class II-A-18 $5,000,000.00 $0.00 $0.00 Class II-A-19 $7,644,000.00 $0.00 $0.00 Class II-A-20 $2,271,602.00 $0.00 $0.00 Class II-A-21 $26,877,000.00 $0.00 $0.00 Class II-A-22 $8,304,000.00 $0.00 $0.00 Class II-A-23 $12,790,000.00 $0.00 $0.00 Class II-A-24 $77,722,000.00 $0.00 $0.00 Class II-A-25 $2,187,500.00 $0.00 $0.00 Class II-A-26 $312,500.00 $0.00 $0.00 Class II-A-27 $12,623,000.00 $0.00 $0.00 Class II-A-28 $5,738,405.00 $0.00 $0.00 Class II-A-29 $819,773.00 $0.00 $0.00 Class III-A-1 $75,489,338.00 $0.00 $0.00 Class III-A-2 $4,342,000.00 $0.00 $0.00 Class III-A-3 $60,391,469.00 $0.00 $0.00 Class III-A-4 $60,391,469.00 $0.00 $0.00 Class III-A-5 $5,658,963.00 $0.00 $0.00 Class III-A-6 $4,031,000.00 $0.00 $0.00 Class III-A-7 $3,180,000.00 $0.00 $0.00 Class IV-A-1 $49,046,897.00 $0.00 $0.00 Class A-X $6,500,490.00 $0.00 $0.00 Class III-X $9,034,394.65 $0.00 $0.00 Class IV-X $667,775.00 $0.00 $0.00 Class A-P $4,099,991.00 $0.00 $0.00 Class IV-P $365,446.00 $0.00 $0.00 Class C-B-1 $15,775,603.00 $0.00 $0.00 Class C-B-2 $8,703,726.00 $0.00 $0.00 Class C-B-3 $3,807,880.00 $0.00 $0.00 Class C-B-4 $2,719,914.00 $0.00 $0.00 Class C-B-5 $2,175,931.00 $0.00 $0.00 Class C-B-6 $2,175,934.81 $0.00 $0.00 Class III-B-1 $2,323,634.00 $0.00 $0.00 Class III-B-2 $1,282,004.00 $0.00 $0.00 Class III-B-3 $560,876.00 $0.00 $0.00 Class III-B-4 $400,626.00 $0.00 $0.00 Class III-B-5 $320,501.00 $0.00 $0.00 Class III-B-6 $320,503.53 $0.00 $0.00 Class AR	 $	 100.00	 $0.00 $0.00
EXHIBIT 99.2 -- Servicer's Annual Statement of Compliance To be supplied upon receipt by the Trustee
EXHIBIT 99.3 -- Report of Independent Auditors To be supplied upon receipt by the Trustee